When I joined up I was'nt thinking of fishing or drinking with my mates down the pub. I was only thinking of getting in, getting through basic training and getting through trade training.
I did it, and enjoyed every single one of my 12 yrs in(yes I know get some time in !).
If you have any doubts then walk to the CIO and keep walking past it !
As to Melchett 01's post you will never get a better bunch of mates anywere in civvy street, they will last you a lifetime.