I moved to Vermont 10 years ago this summer and spent the next seven living there. Should you move there, you might go through the following stages:
1. Loss. On some Friday nights right after moving there while walking to my car after work, I'd see the United flight to Chicago go over Burlington and think, "Well, there's the last flight out to civilization."
2. Joy replaced loss not too long after. Among other things, I discovered hiking (not really much of an option in largely flat Illinois where I grew up) and spent my second summer doing Vermont's five tallest peaks. I roamed the state in search of oddball corners and neat places.
3. Hunkering down mixed in during my second winter. I learned that Vermonters really do have the right idea that when it gets really ugly outside, just stay the hell home.
4. Letting go/resignation. Yeah, there's not a Target around Burlington, you can't get a decent Slurpee (this was pre-new Williston movie theater) and so what? Did I ever really live and work in suburbia? I mean, really?
5. Respect. It is not, and historically has not been, an easy place to live for most of its residents. The winters are hard, jobs sparse and land unforgiving at times.
Things I never got used to:
1. Let's save Vermont. From what? Godzilla? Drowning? Oh, wait. I get it expatriate New Yorkers....
2. Macrobiotic, organic, gluten-free, free-range tillapia or some other weird foodie nonsense. I like meat. Ta da.
3. The Vermont Kool Aid. Oh yeah! Oh no! Never drank it. Yes, it is a beautiful place to live and, yes, I miss certain things about the state and who I was when I lived there. But I also saw a lot of people move there and fall into a real, deep hatred of the rest of the "non-enlightened" universe.
Also, should you move there and leave, be prepared for people to look at you cross-eyed every time they learn you actually LEFT Vermont. That gets annoying.
New Hampshire has a much different vibe, even though it really is just across a river. I'd spend at least a weekend in each before you make your decision.
Also, just for future reference, Connecticut is really, really good to members of the armed forces as well. School is basically free (aside from books, I believe) for at least Navy vets, maybe all vets.
South Royalton, while more rural, is actually in a better, more central position than Burlington. From there, you're close to Boston, Rhode Island, Springfield, Mass. (shrugs), Maine and Connecticut (waves to New London).