What does a guy mean when he doesn't really want to talk about how he ended up marrying his ex and also that his child was an "accident"?

I have met some men who are very reluctant to talk about how they met their ex-wife and what happened that culminated in their recent divorce. A couple of these guys even said, “It was an accident” referring to the child they had together.

What does a guy really mean when he tells you that the child he had was an accident? What reaction does he want from a woman? (He knows I’m a single mom.)

The men seem to love their daughter/child and make it a point to make sure the child is well taken care of and the ex gets whatever finances she needs to give his child the standard of living he would expect his child to have. Each guy says that having a child changes their entire perspective of life. But then why would they still refer to having the child they love as “an accident”?

On separate occasions each of these men also mentioned, “I would like to have another child if I can.” – Does it mean they want me to have their child? [they say this on first couple of dates].

Should I be aware of these men for these reasons :

(1) they’re unwilling to talk about how they ended up with their ex and to talk about what led to not being together (is he trying to cover up his bad points?)

(2) they get women pregnant because they enjoy it but don’t want to do the whole husband thing

(3) they claim their child is an accident / says they would want another / as a way of warning me that they have a history of getting women pregnant and then not committing to a loving relationship.

Or, could it be they are just trying to be honest yet….not? I need a guy’s perspective on this.