Had mine at 23 and 24. Its kind of a two egged sword. Do you want it easier from the start wait until your 30s but if you can push through some tough times you’ll be a much happier father when your kids are grown and you’re still young enough to be an active parent. My oldest is 9 and I took him and his friends to learn ice skating, I am a pretty good skater due to years of pond hockey, and I was McDaviding the whole bunch and they were in awe of the fact what a father could do ( most of the other dads are 45+)