Traditionally, Men have been the gatekeepers to resources, and Women have been the gatekeepers to sex. Following this, marriage served to guarantee the gender-limited items to your spouse.

For women, they were guaranteed access to men's resources. If you got a divorce, you were entitled to alimony.

For men, you were guaranteed access to monogamous sex. If you caught your wife cheating on you, you were entitled to divorce and did not need to pay alimony.

These things have changed. First and foremost, there was the creation of 'No Fault' Divorces. My understanding is that previously, if you could 'prove' that the wife was at 'fault' for the divorce, including Adultery, Abandonment, or committing a Felony, you would not be responsible for providing alimony. This has changed with every state now allowing No-Fault Divorces.

In one fell swoop, this re-enforces the advantages that women get from marriage, and undermines what men get from marriage. It ensures that women continue to get the benefits of a marital contract (access to resources), while implying she does not need to uphold her obligations: monogamy.

Additionally, men are no longer entitled to sex during marriage. Marital Rape use to not be a thing. In-fact, Traditional rape laws in the US defined rape as forced sexual intercourse by a male with a "female not his wife" (Per Wikipedia, sources are present there). From my reading, non-consensual sex was only considered rape if it was performed towards a woman who was not your wife. This changed and by 1993 non-consensual sex with your wife was considered rape in all 50 states.

Another stab at men's side of the marriage contract. Men are no longer entitled to sex, and no longer are women punished by non-monogamy in a marriage. Simultaneously, women reap all the benefit from their side of the contract, gaining access to men's resources during and after marriage.

And while we're at it, let's just remind everyone that 70% of all divorces are initiated by the wife in a heterosexual relationship. This means that even if you do not want to give up on your relationship, and want to continue to work on it, if the wife wants to call it quits she still gets your money.

To clarify. I'm not saying its okay to rape your wife, or that you should be able to. I'm saying that over the years the marital contract has become remarkably one sided against men.

Men. Don't ever marry.