Of course you aren't concerned NOW...in 30 or 40 years you certainly will be. But then, you appear to be a nihilistic antinatalist, so there are clearly other issues at play here.
I suspect that people who haven't had kids will not like to admit that they have any regrets about their decision, just like you will rarely find a parent that will say they wish they hadn't had a child.
Once you're over a certain age you can't really change your mind. Some people decide to focus on their careers, but becoming a parent doesn't mean you won't reach your career goals.
