I love the .UK, but I still have a burning desire to move over the pond. I honestly think I'd fit in better over there. Quite a few girls have hit on me because they thought I was American and liked my accent. Strangly enough I'm 25% Irish, 65% English, and 10% Canadian, not an once of Yank in me. I've lived in England my whole life, too.
I like the mix of countryside and city scape that you get over here. I live in a town, which is all single houses, with windy roads and lots of trees and grass, but a train journey away is Manchester (or as I like to call it, New York 2.) In America is certainly more "one or the other" whereas over here, you can always get both.
I prefer the weather here. It's sorta like the countryside/city point too. Over here, it gets a little warm, then it gets a little cold. Different enough for you to notice it, for you to get days at the beach, and a white Christmas, but you could probably get away with wearing a t-shirt outside now, whereas I know you couldn't do that in say.. New York. The weather is alot more extreme out there. It being really hot, and then really cold. We don't get tornedos either.
I love English tea, you just can't get it in America. You can get "tea" but it isn't "our" tea. (Aka = real tea.

t: ) Infact, it seems you can't get it outside of the city either. I went to Nottingham (Actually stayed in Sherwood Forest - Robin Hood, etc) and the tea there was just.. bad, it wasn't normal.
I think America in general just has nicer people too. Me and my friends have been attacked twice in the last 4 months, for instance, both times being gangs trying to rob us.
I love America for being more accepting of comic-book fans. You think it's bad for you guys? I got ripped to hell by random passers-by for wearing a Batman t-shirt to see Batman Begins. I think it's because their an "American icon" the majority of English ignore them as lame and childish. I also love American TV and movies, x100 better than English tv. For every good English film, there's a 100 better American ones, fact.
I Love The Uk,
And I Love The USA.