Don't listen to your "friends", Cadet. Your "friends" are what Cartman calls "College Know-It-All Hippies." In ten years, you'll be well into a successful and responsible career either in or out of the military. In the meantime, most of these friends (who you'll never see again) will be holding down meaningful employment; like clerking at Barnes & Noble or assistant managing the night shift at Denny's and still living in their parents' basements.
Actually I'm an Ivy League student, and one of the more anti-Iraq war people I know is an Air Force Academy grad (who claims the position's not uncommon at the Academy).