Yeah, I wish I'd had "free time" in college. 60-70 hour work weeks were normal - 20 hours a week in class and then a full-time load of courseworks / readings / labs etc. I couldn't afford to take time off on weekends for the first 3.5 years. It was horrendous.

Once I started full-time work it was like a revelation - finally I don't have to work on evenings and weekends! I actually get free time to myself! I can have hobbies!