I'm not suggesting it's better. But people seem to automatically assume that being older when having kids as better. I know some much older parents who were not good parents. I know I would not make a good parent to a younger child now that I'm in my 40s.
I don’t deny that your way can work out as well. But OPs advice was “get children before you are 30, don’t wait until after”. Whereas my honest advice, based on my experience, is “wait until you are 35, you’ll be much more stable life in several regards”.
Which approach is best for you depends on a lot of things. For me, I can honestly say, there is no way I would be where I am if I had had kids in my 20s or even early 30s, and I also wouldn’t have been as good a father as I am right now based on how I’ve grown since then. Both things that my child directly benefits from.
I feel like I do have the unique perspective having actually done both. I don't need to assume what kind of parent I was in my 20s because I was that parent. And I'm a different parent now. But being a younger parent was a great experience despite any other consequences.
And the life I have would just not have been possible if I had a child back then. Not even if I completely sacrificed family time and attention back then, which I never would have wanted.
But I guess we have to agree to disagree. For you, being a younger parent worked out better. For me, I’m certain I got my child at the right time. In any case, I find OPs general recommendation that if you want children, you should have them by 30, to be ill-advised to the point of being harmful. Many people would benefit from waiting until later.
I'm 32, and I think I currently have much less patience and understanding than I did at say 22. Life has basically broken me to the point that I simply don't have the capacity for these things that I used to.
Kids at 27 would have been a bad bad idea. Kids at 32 as well (wrong partner). I’m even older now but I am with the right partner and naturally want kids now. Before her, the topic wouldn’t even cross my mind.
I think it’s really hard to give general advice if one doesn’t mention how their advice interacts with other variables
I also have plenty of energy, the only real change I’ve noticed getting older is I’m in bed a bit earlier than I was in my 20s.
I don’t understand why people think midlife is some kind of drained, lifeless decrepitude
I think people have a variety of health conditions and lifestyle choices, some of which do indeed result in less energy in mid-life.
Kids change you, for the better if you let it. There's nothing like a completely helpless infant who is totally dependent on you to wear down your selfish tendencies.