Its all about perspective.
There comes a time, hopefully, when you have enough to provide for your partner, yourself, and your progeny, and you scale it back.
My wife is a doc, I am an executive, and we still have not reached the point where we feel that we can tone it back. However, I do see my wife pass out on the couch every night from exhaustion and I come home from a week of travel and we barely enjoy each other.
What I can tell you, OP, is that there is an inherent drive in all good people to make sure that they provide every opportunity for their offspring that they can. Working hard to me gives me great satisfaction and my wife, well, she is one of the best young doctors in the country. We arent perfect, but we certainly intend to give whatever babies God blesses us with every edge that we can. The world is always changing and when we are dust we dont want them to be scrambling if we can prevent it.
On the other hand, I agree with Woodsy. I have to carry my exhausted and spent wife to bed from the couch every night. She fights me, as she i9s comfortable and doesnt want to move. Do I see an imbalance between our income and her quality of life? It is debatable. I am proud to be with someone so strong, but as a husband I would die to protect her and make sure she is happy and safe, as well as not killing herself.
I will say this....My children will have so much more opportunity than I did because we worked so hard. I believe it was Winston Churchill that said "If you are not a liberal at 20 you have no heart, if you are not a conservative at 40 you have no brain."
Your priorities and your view on the world will change the older you get my friend.