If you have two degrees already and you want to try out the military go ahead. Personally with that under my belt I wouldnt have joined. But you wont know if its a good decision until you try it.
I spent 5 years enlisted until I broke (destroyed) my leg and while I enjoyed every minute of it my quality of life is 100x times better. I needed the military, the college money and it was alot of fun. But I just started a new family, my second house, 3 cars.. blah blah blah.. I wouldnt have had that in the miltary but because I joined it did give me a great head start in life.
Enjoy, have fun, keep your mouth shut in basic and most importantly keep your head up.