You can get divorced for no cause (no infidelity, financials are fine and you didn't do anything else wrong) and you'll be forced to hand over 40% of your net income to your ex-wife for the rest of your life. (even if there are no children - if there are, you get to pay even more)
I'm fine with women leaving for no cause (it's her business) and also with financially supporting children (as probably most men are) but I'm not going to sign a contract that could potentially leave me financially broke for no cause.
So even though the Harvard study might give some insight to married men on what they could do better I doubt that marriage under the current framework will even exist in a few decades.