One thing feminism is responsible for is giving women the choice to either stay or go in relationships (of course it is not as cut and dry as this but it's at least better than it was when women had no choices) so yes feminism is likely responsible for some divorces as women sought to gain freedom from their husbands for one reason or another. For example I chose to marry a guy who I later discovered was addicted to PMO. Thanks to feminism I could have divorced him, rented or purchased my own home, supported my family through employment and I wouldn't have felt like a scourge on society, nor would my kids. For this I am grateful. Another funny thing happened in the 1960's along with the rise in feminism and that is the publication of the first porn mag called "playboy". It told men that they didn't have to 'settle' for their wives anymore and were encouraged to go 'play'. Considering 56% of divorces cite porn viewing as a "significant contributor" you can probably guess what the real family breakdown is caused by. Not to mention studies that show men who engage in frequent porn viewing show less interest in marriage and family as well as less support for women's rights.
Porn made me put women on a pedestal and I was a mangina all the way through highschool. I just sort of compartmentalized a little bit (manginas do that.) I was willing to accept that porn was just a fantasy and continue looking for a monogamous relationship (with some reluctance I'll admit.) But now I'm just aiming for the lifestyle that looks the most rewarding, and the men who commit the most get the least back. Edit: you know there were hardcore porn movies long before playboy (or color film) right?
Arguably porn was invented long before the wheel. (See: Venus of Willendorf, and related figurines. Mild trigger warning, obviously.)