Ha, I came to that conclusion a few years ago. Every now and then I think "Maybe I should give it another try ..." and then immediately I think "Nah, screw that". I've also met a couple of decent people online - I dated someone I met on Match for almost 4 years - but unfortunately (for others and for me) I'm just not interested in spending that much time now dealing with crazies.
I told him I don't date dads, and he totally freaked out on me. Said I was messed up, because most women would be jumping at the chance to date a guy with kids. Um, what?
And that's where your conversation with him should have ended, right there. "I don't date dads." is a complete sentence that doesn't require any further justification or explanation. His response smacks of "What do you mean? I'm totally looking for an unpaid babysitter for my crotch turds, and you're female - you should be thrilled to accept, you ungrateful bitch". Uh, no. Bye, Felipe.