Pros: beautiful scenery (you'll never find a more beautiful place on earth than NH in the fall), skiing, essentially no dangerous animals, limited bugs outside of summer time, quiet, low crime rate, no sales tax.

Cons: Winters can be rough at first if you aren't used to the cold, cost of living/housing/utilities, one of the whitest states in the country, not a ton of culture, property taxes are stupidly high.