Hmmm, I agree that the culture is over-sexed, but if you HATE sex and view it as disgusting, I do feel that this makes for a very unhealthy and dysfunctional marriage and I'm sure that was really difficult for both of your exes. While a woman has no excuse to ever cheat on a man in marriage, you should know that if your wife ever even suspected that you were disgusted by having sex with her, that is also emotionally damaging and even crippling for her.
They were wrong in what they did, but you need to own up to your part in the breakdown of those marriages as well. They may not have known what they were signing up for when they married someone who abhorred sexual intimacy.
The good news is that there are women out there who share your views about sex, but would still love a platonic affectionate relationship with a husband of their own. So don't give up, but do make SURE that they know exactly how things are - and agree to it - before making any commitments, because otherwise it is doomed to fail. And by fail I don't mean divorce. The divorce is just the usual result of marriage failure, not the cause itself.