Quote from Ghost of Cutten:
IMO long-term expatriation is only worth it under the following conditions:
i) you live in a shithole 3rd world country and can't have a good life there, even if you work hard
ii) you live in a reasonable 1st world country, but your profession is taxed at punitive rates such that you cannot hope to achieve financial independence (e.g. Scandinavia with 50-70% tax rates on self-employed high earners), and you cannot use tax reduction methods such as pension contributions, low-taxed savings accounts, or corporations to pay a more reasonable tax rate
iii) you want to live somewhere abroad for a year or more for its own sake (e.g. you like travelling or the expat lifestyle, you are single with no kids, some of your friends are going abroad to work etc)
iv) you have a spectacularly hot and interesting non gold-digger girlfriend(s) in some low-tax (for expats) jurisdiction like Russia/Ukraine, Colombia, Romania, Bahamas, Phillipines etc, and want to see if things work out when you live close by or together, before considering a visa marriage or relocating her back to your home country. Odds are against this working, and you can have a problem if it doesn't work out, but it can be fun to try. The downsides of 3rd world living are ameliorated significantly if you have some prime pussy to assist your transition, and help with translation, local knowledge of the best nightlife and leisure spots, getting deals at local prices instead of ripoff foreigner rates etc.
Also a significant amount people, when they are retired/semi retired, move to a cheaper location with lower tax, so they can afford more buying power and usually enjoy a better climate (in their opinion). It seems to be worth it for many.