How have you felt about being a "later in life" parent?

As a many millennials, I had my kids in my 30s (33 +35) perhaps slightly on the older side of the new normal. Compareitvely, my parents were very young just 23 for my birth.

It blows my mind, how quickly the norms changed.

I often find myself doing milestone math, when kid is 10 il be 45 etc which I find really hard. I wonder if perhaps being a young parent was really the better choice all along...

How's everyone else doing with being 30 and 40s with young kids. What do you think about the age you became a parent?