This is a tough question. I've heard of Thailand and Costa Rica.
Here are my thoughts after leaving over a year ago. Living some where else for a short period is nice, but what about your stuff? I sold all of my stuff and I'm working from a laptop. It's a pain in the ass sometimes though, especially when dealing with banking or modifying an account or getting paid not through wire or epassporte. I think it would be nice to have a place in the US where you can store things you need or want to keep and be able to return to. Maybe a cheap apartment or rent a room at a friends house.
I think an adventurous thing to do would be hop from country to country. Stay one place 3 months, head to another place for 3 months, and so on. Then return to your home base when you need or want to.
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