I'd prefer to have my own naturally but there were some cases in my life where I fell in love with women through the kids they had. Generally the key is that I have a blast hanging out with their kids (I still like to play video games with them and things like that). If that happens, and I get along well with their mother, I would have seriously considered it when I was single.
Unlikely. I think I'm too young to basically take the role of being someone's stepmom. I also kind of want his first child to be with me, as selfish as it may sound. If I was a single mother, then I would be open to dating single dads though.
Id rather have a family on my own and id be scared that the kids wouldn't like me. But if id really like that person and if id have a good relationship with the kids id consider marrying that person. But id want at leats one child of my own too.