In matters of the heart, no less than the market, a bigger investment means better returns. The benefits that marriage (but not cohabitation) brings are not small… marriage for most people is the means to health, happiness, wealth, sex, and long life. In love, victory goes not to the half-hearted but to the brave: to those ordinary people who dare to take on the extraordinary commitment marriage represents. 
You can find some of Professor Kohm’s scholarship at: http://papers.ssrn.com/sol3/cf_dev/AbsByAuth.cfm?per_id=183817#.
More of Professor Kohm’s scholarship on these issues is available at these sources:
What’s the Harm to Women and Children? A Prospective Analysis, in WHAT’S THE HARM: DOES LEGALIZING SAME-SEX MARRIAGE REALLY HARM INDIVIDUALS, FAMILIES OR SOCIETY? 79 (Lynn D. Wardle, ed. 2008).
On Mutual Consent to Divorce: A Debate with Two Sides to the Story, 8 APPALACHIAN J. L. 35 (2008).
Understanding and Encouraging Realistic Reconciliation in an Age of Divorce, 32 VBA J. 8 (June/July 2006).
Cohabitation and the Renaissance of Marriage (coauthored with Karen M. Groen), 17 REGENT U. L. REV. 261 (2005); cited in Lynn D. Wardle, What is Marriage? 6 WHITTIER J. CHILD & FAM. ADVOC. 53 (2006); Nancy Levitt, Pitfalls and Promises: Cohabitation, Marriage and Domestic Partnerships: Bibliography: Cohabitation, Domestic Partnerships, and Nontraditional Families Annotated Bibliography, 22 J. Am. Acad. Matrimonial Law (2009)( noting the exploitation of women and children).
Does Marriage Make Good Business? Examining the Notion of Employer Endorsement of Marriage, 25 WHITTIER L. REV. 563 (2004); cited in 6 U. PA. J. LAB. & EMP. LAW 865 (Spring 2004); Selected Current Bibliography on Labor & Employment Law, 98 NW. U. L. REV. 579 (2004); Daniel W. Olivas, Tennessee Considers Adopting the Louisiana Covenant Marriage Act: A Law Waiting to be Ignored, 71 TENN. L. REV. 769 (2004); Karen Turnage Boyd, The Tale of Two Systems: How Integrated Divorce Laws Can Remedy the Unintended Effects of Pure No-Fault Divorce, 12 CARDOZA J. L. & GENDER 609 (2006).
The Collateral Effects of Civil Unions on Family Law, 11 WIDENER J. PUB. L. 451 (2002); cited in John G. Culhane, The Heterosexual Agenda, 13 WEIDNER L. J. 759 (2004); Melissa Durand, From Political Questions to Human Rights: The Global Debate on Same-Sex Marriage and its Implications for U.S. Law, 5 REGENT J. INT’L L. 269 (2007).
Fairness, Accuracy and Honesty in Discussing Homosexuality and Marriage, 14 REGENT L. REV. 249 (2002) coauthored with Dr. Mark Yarhouse; reprinted at SOCIAL SCIENCE RESEARCH NETWORK www.SSRN.com, available at http://papers.ssrn.com/sol3/papers.cfm?abstract_id=269418 (May 2002).
How Will the Proliferation and Recognition of Domestic Partnerships Affect Marriage? 4 J. FAM. STUD. 105 (2002); also available at http://papers.ssrn.com/sol13/papers.cfm. cited in Katherine Shaw Spaht, Revolution and Counter-Revolution: The Future of Marriage in the Law, 49 LOYOLA L. REV. 1 (Spring 2003); Lynn D. Wardle, Counting the Costs of Civil Unions: Some Potential Detrimental Effects on Family Law, 11 WIDENER J. PUB. L. 401 (2002); Michael Scaperlanda, Kulturkampf in the Backwaters: Homosexuality and Immigration Law, 11 WIDENER J. PUB. L. 475 (2002); Katherine Shaw Spaht, The Last One Hundred Years: The Incredible Retreat of Law from the Regulation of Marriage, 63 LA. L. REV. 243 (Winter 2003); Herma Hill Kay, “Making Marriage and Divorce Safe for Women” Revisited, 32 HOFSTRA L. REV. 71 (2003); Lynn D. Wardle, The Curious Case of the Missing Legal Analysis, 18 B.Y.U. J. PUB. L. 309 (2003); Lynn D. Wardle, 116 HARV. L. REV. 1026 (2003); Nancy K. Kubasek, Alex Frondorf and Kevin J. Minnick, Civil Union Statutes: A Shortcut to Legal Equality for Same-Sex Partners in a Landscape Littered with Defense of Marriage Acts, 15 J. LAW. & PUB. POL'Y 229 (Spring 2004); Appendix A, Law Review Articles citing Baker v. Vermont, Justin W. Starr, 18 BYU J. PUB.L 353 (2004); Nancy D. Polikoff, Making Marriage Matter Less: The ALI Domestic Partner Principles Are One Step In The Right Direction, 2004 U. CHI. LEGAL F. 353; Mary Kay Kisthardt, 19 J. AM. ACAD. MATRIMONIAL L. 223 (2005); Domestic Partnerships: What the United States Should Learn from France’s Experience, 24 PENN ST. INT’L L. REV. 683 (2006); Laura A. Rosenbury, Friends with Benefits? 106 MICH. L. REV. 189 (2007); Melissa Durand, From Political Questions to Human Rights: The Global Debate on Same-Sex Marriage and its Implications for U.S. Law, 5 REGENT J. INT’L L. 269 (2007); Erin Cleary, New Jersey Domestic Partnership Act in the Aftermath of Lewis v. Harris: Should New Jersey Expand the Act to Include All Unmarried Cohabitants? 60 RUTGERS L. REV. 519 (2008); Shahar Lifshitz, A Potential Lesson from the Israeli Experience for the American Same-Sex Marriage Debate, 22 BYU J. PUB. L. 359 (2008).
What do VAWA, Elian and Grandparents Have in Common? Federal Involvement in Family (Law) Governance, VIRGINIA LAWYER 18 (Feb. 2001); reprinted in ELIAN GONZALEZ: THE CRITICAL READER, Paul Allatson, ed. (published by the Institute for International Studies, Sydney, Australia)(2007).
Marriage and the Intact Family: The Significance of Michael H. v. Gerald D., 491 U.S. 110 (1989), 22 WHITTIER L. REV. 327(2000); cited in June Carbone, Which Ties Bind? Redefining the Parent-Child Relationship in an Age of Genetic Certainty, 11 WM. & MARY BILL OF RTS. J. 1011 (2003); Marie A. Failinger, A Peace Proposal for the Same-Sex Marriage Wars: Restoring the Household to its Proper Place, 10 WM. & MARY J. OF WOMEN & L. 195 (2004); Niccol Kording, Nature v. Nurture: Children Left Fatherless and Family-Less When Nature Prevails in Paternity Actions, 65 U. PITT. L. REV. 811 (2004); June Carbone, The Legal Definition of Parenthood: Uncertainty at the Core of Family Identity, 65 LA. L. REV. 1295 (2005); David M. Wagner, The Man Who Declines to be Socrates: Justice Scalia, Truth, and the Jurisprudence of Tradition, 12 WIDENER L. REV. 473 (2006); Mary Patricia Byrn, From Right to Wrong: A Critique of the 2000 Uniform Parentage Act, 16 UCLA WOMEN'S L.J. 163 (2007); Rena M. Lindevaldsen, Sacrificing Motherhood on the Altar of Political Correctness: Declaring a Legal Stranger to be a Parent Over the Objections of the Child’s Biological Parent, 21 REGENT U.L. REV. 1 (2008)).
The New Paradigm for the Feminine Mystique: The Authentic Women’s Perspective, 2 LIBERTY, LIFE & FAMILY 259 (June 1996).