Did you ever regret joining the military?

Ok so i am in the DEP program for the navy. I am leaving 20110816. This is what i want, but i keep having thoughts of scared. I want to stay in the entire 20 years but im scared ill be deployed every year and not be able to have a family. So my question is, if i go in and get married after training, or maybe before training, yes im engaged, how often will i be deployed? if i get out after 4 years will i be able to get a job? i go in as an HT btw. I am so looking forward to the navy, did anyone regret it? If your not in the military, and you were ablee to turn back time and go in, would you?