Now I always find quite the reverse to be true, I can think of a few people that have suddenly mentioned they have no regrets about having a baby at 17 when talking about their adult children......
Older parents will always say no health issues, boundless energy, I have so much money, I have a house, I partied and travelled, I've never put a foot wrong in life. Good for them, I guess
Can honestly say I've never seen the reverse from younger parents, it's quite rare if it happens. I have seen people say it hasn't stopped them from achieving what they wanted, though. I think some people just pray for the downfall of younger parents and are weird when they refuse to admit that they're lives are ruined.
On the topic of education, when I was in third year at university, I had a few friends who were doing phds and masters. I'm now doing a post grad and know people with children in their 20s and 30s - successful, intelligent, motivated. Having a child doesn't stop academic or driven people from achieving what they want.