I was an RA for 3 years.
I loved it
I got my single room, then apartment as an upperclassmen, for free.
Plus, I learned a lot about planning and managing along with counseling and being a mentor. I met amazing people through Residential Life and I would do it all over again.
I even met my very bestest friend as an RA - we were in the same building and became rediculously close.
I would highly reccomend it... but you need to love bulletin boards and late night fire drills