I'm turning 17 in 6 months so I think I'm a big guy now, lol

. I was wondering if I should join the military in the special operations for 1-2 years. I have many pros and cons to joining so I wanted every1's input.
Pros:
1. I get various benefits from the government for my service
2. I can learn discipline and other useful skills
3. I can have the pride of having been part of the special operations
4. I can help my country
5. I've been working out all my life, studying, and practicing various warrior skills, being a specops soldier would be the next progression.
6. My friend joined the specops as a pararescue jumper and he says he likes it and I'm just as mentally tough and fit as him
Cons:
1. I might have to hurt or kill ppl, I'm not sure how bad I would feel if it was a justified war though
2. My friend said the military would push me mentally and physically until I'm no longer normal. Would I have trouble adjusting to civilian life afterwards and starting a family and would I risk losing my personality due to the rigorous conformity of the army?