Some have the experience of undergrad as one of whimsical lack of responsibility (myself included), but there are many students out there juggling classwork, jobs, families, etc. It can also be very stressful in the moment, whereas hindsight paints a rosier picture (myself included).
I'm 31 now with two small children and a wife. College still stands as the most stressed out period of my life. I got shingles in the final months leading up to my graduation.
