SA is entirely worth it, almost regardless of what you spend the time doing. College is a time when you are young, free, and travel can be covered by financial aid. Even if you spend an entire semester pub crawling across Great Britain, you will have a blast. If you don't travel in college, there is a good chance you may never really travel. You'll graduate, get a job, and maybe you'll be able to take an exotic vacation, but you will have passed up on an opportunity to travel for a semester or year.