If you're going to just roll the clock back and stick me with the same partner, uh, no, no kids for me at all, thanks. One of the greatest obstacles (for lack of a better word) to raising my son was my truly fucked up relationship (remember, hindsight is 20/20), in particular, being partnered with guy who was a LOT like oldandconfused with one MAJOR difference, this fucker was anti-abortion (which he never told me when we were dating) and said he wanted the baby (the pregnancy was an accident and I was totally neutral about it, please don't bust my ass, I'm a pagan, we believe in reincarnation, you can't kill souls), however, when the kid was born my husband was essentially uninvolved, PLUS he amused himself by pulling mind games on his own son. Additionally, my son was one of those boys who REALLY wants to be doing "guy" things with dad from the time he was really little, y'know, throwing the ball around, shit like that, and dad was always, too tired, too busy, not interested. Just fucked the poor kid up.
Now could I roll the clock back and have a different partner who actually WANTS to have children and wants to be a contributing partner, then yes, I would have children, and actually would have enjoyed having more than one.
For me one of the keys to having children is having a supportive partner to share parenting with.