A Macbook pro Retina display should last you for the time you mentioned, provided you take care of it. As in: Always have the screen saver on, remove it from the charger when it's fully charged, don't drop it, but if you do, most important of all, BUY THE MAC CARE WARRANTY. My wife, daughter and myself bought it for each of our systems and it's paid for itself three times over. Apple is really good with honoring that warranty and taking care of its customers.
Good luck at college.
I am finishing my junior year in high school and have saved enough money to purchase the 15 in macbook pro retina for $2,200. My question is will it last me through my senior year and my 4 years of college? I like to play MMO's, but nothing to heavy. I also will be using lots of fairly graphic intensive programs as an engineering student. Any suggestions will be greatly appreciated.