Depending on the level of work required by the college, it would get in the way of said work. 3 hours a night is a lot of time spent not doing homework and not being social.

College was useful (at least for me) for those two aspects, neither of which I would have been able to really do well with 3 hours a night of gaming.

Post-college? Do whatever you’d like. In-college, you’re paying for time you won’t get back. :)