I have to second what Phoenix-mama said. I take responsibility for marrying my X, but not his abusive behavior. I take responsibilty for not humiliating myself and asking for help to get out sooner. But when you're dealing with a sociopath, it's hard to tell which way is up and the continuous gaslighting makes you not trust your ability.
Aside, it is weird how when MamaJen quoted Phoenix-mama, her old user name was in the quote.
I am only once divorced, but as I go out into the dating world, dating a twice-divorced man doesn't phase me, if he can explain it. To some extent marrying more than once makes one an eternal optimist, or conservative in social morals (not wanting to 'just' live together) or needing security. My X did not show any asshatitude when we were dating. He drank a little bit too much, and hadn't properly fixed his teeth. These were the only red flags. And then he became very abusive later. So I do not judge others by their multiple exes.
However, when I think about long term with someone who had multiple marriages, I get fearful. I would want to talk to the exes and get their version of the story, or verify from counselors, or something. But then, I have major trust issues due to what has happened to me.