I'm 62 and have been in this industry for 40+ years. The BIGGEST regret in my entire life has been the time I spent as a young man working stupid hours on "super important" jobs, and missing seeing much of my kids growing up.
I worked 7 years about 60-70 hours each weak for customers which „are so important“ to work at weekends.
No one will give you the time back you could have spend better by developing yourself, family time or staring your own carrier. But working for a company is most of the times lost time.
Yeah, not quite as quick off the mark as you youngsters :-).
I posted a similar comment to yours in 2021: https://news.ycombinator.com/item?id=27065714
Grass is always greener.