I agree, it's mainly the mans fault:
1. The man lets his genitals make decisions for him without considering potential consequences and financial ramifications.
2. His total ignorance of the marriage and divorce laws is the nail in the coffin.
Have sex with as many women as possible, but don't live with them, don't get them pregnant and don't marry them. Follow these simple rules and you'll have much more money in your pocket and live a happy, stress-free life.
I agree with the "don't get them pregnant" part.

One of the main issues is that a woman will likely change MORE then a man between age 21-35.
Take for example, the high school sweethearts that marry in their early 20's.
Before age 30 she's likely to have a very different set of goals and desires then when she first got married.
It's my observation that most men cave and simply go along with it.
They even have this ad ( insurance?) that shows the stages:
scene 1: young couple sitting on a plane with rude kids behind them kicking the chairs.
He says ; " We're never having kids."
scene 2 : She walks by him and says ; " I'm pregnant"
scene 3: Sitting in their upscale , city , high raise condo he says;
" We're never moving the suburbs"
She looks back and says; " I'm pregnant ( again)" So, they move to a bigger home in the dreaded 'burbs.
scene 4: He looks at a guy with a mini-van and says ; " We're never buying one of those."
Of course, they immediately show him driving his own mini-van with wife and both kids.
scene 5 : having changed and fully accepted his fate as a family man he hugs his kids and says;
" I'm never letting go."
The ad paints a nice picture in the end , but we know he endured a lot of bullshit and just let it happen.
I think real men, take control of the direction of their life and don't just go along for the ride.