I have a few kids, raising them is a mix of good and bad, like everything else. it took a toll on my career, pushed my temper to the edge, and stressed me out all these 20+ years, but I also enjoyed many moments. it does not go away when they got older by the way, it's a life long strong bond, at different phases there are different challenges.
If I have a second life, I don't know what to do though, I probably will first make enough money before having kids at least.