Actually, it gets better. That's the dirty little secret that I never knew about. Investment banking used to have insane hours (100+ basically on call all the time). The idea was that after 4-5 years you leave for a buy-side gig (hedge funds, private equity) that pay you the same or more ($1-5M in your early to mid-30s) but with more reasonable hours. This is why the smartest CS/Math/EE/Physics grads from MIT etc went to Wall Street in the 2000s.

I wish I knew then what I know now :) I put in 100+ hours a week for a tech firm because interesting/love what I do/blah. And all I have to show for it is stock that increased a little bit.