I agree that most engineering students don't care much either, but they generally have to put more work in and leave with some practical skills as well as a nice signing bonus + job at the end of the program. Humanities majors can just end up lost, no better off than after high school, and spending their 20s 'exploring.'

Take this with a grain of salt, I recently graduated so these are just my thoughts. Maybe in 10 years when I'm 30 I will say it's better to spend your 20s exploring. But probably not :)