They take drug use very seriously. Doesn't like the right place for you.
Personally, I've decided the US is good for me. But, if I were to relocate for a couple of years, it would likely be to Spain or Italy.
Costa Rica does have some bad crime issues. Expats sometimes don't last there. Do some research.
Japan is the safest Asian country...and a lot cooler than Singapore. I'm not sure I could live near the Equator, so Singapore always seemed a bad option for me.
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