We are in or 60's now. It is not my right to judge anyone or tell them how to live. But I will say this as I look back, when we were raising the kids, we took vacations, both camping and flying. Bought boats and trailers, (none cash) We put in a small back yard pool. We remolded houses, and in general spent a lot of money we did not need to. Often we did it on credit cards, paid interest, and in general did a lot of things. We did not have to. And a few times those credit card balances got pretty high
We did however buy a small office bldg., 30 years ago, which has greatly helped with any planned retirement. So we will be good in retirement.
If I have any regrets it would be
1) We did not do more of it, vacations etc
2) I worried to much about my career. And did not take more time off with the kids
Once those kids and your youth are gone, they are gone. you will never get those times back. I would much rather have those memories than any extra money we would have in the bank, had we not done those things.
But that is just me and us. not up to me to judge other's choices