My current job isn't so bad, either. The pay is peanuts, but it isn't "corporate" (100-ish employees, but just 6 in my department) and they've been great about working around my school schedule for the last 4 years.
So yeah, jumping feet-first into entrepreneurial waters is appealing to me for all the usual reasons, but I just don't have the time to devote to it right now. And weekends are off limits, too.
I should have more time in the spring, but Spring Fever usually starts early for me. :)