In what way are you prevented from living where weed is legal?
Money, friends, family, culture, language...

Is there anything beside a few years of sacrifice that prevent you from living there?
Money, ok I can make money if push comes to shove. Friends, I can make friends, learn a language, adapt to new cultures. But family...

Also, do you know of any countries with a shortage of weed growers? Most nations want their immigrants to be useful to them.