To the original poster and all curious personel,
MS1/MS2 is harder in my opinion than clinicals. You have flexible time during the first two years of medical school, however its just reading textbooks, feels like going to college.
As a 3rd and 4th year student, things does get more interesting as all the concept you read during first two years gets tossed out the window. Clinical practice and academics are two totally different aspects. They do relate and you do look smart for knowing odd questions, but in terms of management, its never the same as how you read it.
You do have time to go out and party as a 3rd and 4th year student. Life is easier as a 4th year since you will be doing electives and going away for interviews. Majority of the time, you know what you want to do and won't even care for the rotation. Enjoy your time in Medical school. =)
As a resident, it depends on the program. I have fun during the weekends, I still go out and party, I go hang out with friends, watch movies, dinners, snowboarding, going away on conference.
So the term "No life" is a misnomer. Just so you know, I am a 3rd year ob/gyn resident and I have plenty of fun. =) I do work close to 80 hours a week... read an hour a night, do presentations, work on research, and still enjoy my private life. It depends on how good you are with time management.