Once I worked 50-60 hour weeks for an IT vendor. I spent weekend time traveling; I spent 50 or even 100 nights per year away from home; and missed a fair chunk of my son’s first four years. My aspirations changed as I got older and had family, and the company changed too. It had ceased to be fun. At times it got downright Dilbertesque.
So I quit. Now I work for my own company (I figured it was the only way I was ever going to be a Managing Director). I still work long hours but I do so mostly at home, at times that suit me. I work on projects only if I think they are a good idea. I am away from home when I want. I took most of January off to go camping with my son, and most of February to play with my hobby (model railroading if you must know).