Try dressing like a slob and borderline bum next time you visit the city next to where you live, then do the same dressed in an expensive tailored suit and matching watch(just get some gaudy knockoff on amazon, its not like anyone can actually tell). The difference in how you are treated is just nuts. Its not that these countries are inherently welcoming to foreigners, its that the service sector of pretty much all countries are welcoming to people who are very wealthy. (or rather people who can plausibly fake it)