I would have kids everytime. I (and OH) created people I/we love being around - what's there not to like?
They are still young but wouldn't want a life without them. Bar serious traumas I really cannot understand anyone regretting having children.
I think I had them at the right age. Loving it now. Hoping to be able to have some good years travelling with the OH when we are older but if it doesn't happen well that's OK. Kids are more important. No job or life ambition comes close to that in my view.