Ironically the best job I had was at a supplier for bars where I worked 60+ hours a week on average. It was hard as shit but I had a lot of fun working with my coworkers and touring the country delivering to bars and parties. I work 36 hours in an office right now and I can feel my sanity slipping away.
That being said I couldn't probably do 60 hours a week for the rest of my career. I look forward to the day this species decides to stop working to death.