I've always dreamed of living in another country, even if it was just for a couple of years. It seems like it would be such an adventure.
My first choice is Sweden for multiple factors. I own a Pit Bull mix, I would be able take her with me. They also have an extremely high quality of life, they're stickler for rules, they have an introverted culture that revolves around socializing in bars, its pretty much heaven for people with outdoorsy hobbies, they like Americans (like... a lot), and I hear Swedish is one the easier languages to learn for English speakers (though it is a pain to practice because everyone wants to speak English with you). I also really like that other European countries are easily accessible, making vacations cheap and easy. If I didn't have my dog, I would also consider other countries like Norway, Denmark, or even Germany.
I've also thought about Canada, which is like a more progressive US. Vancouver has a very similar culture to my own, as we're both located in the Cascadia bioregion. I feel compared to other countries, Canada would much more easier to adapt to, but that also takes the fun out of it.