Europeans think its sewer water, and you have to wear (or be) a wife beater to drink it. North American's think its gold -- At least here in Vancouver, its usually the most expensive thing at the bar and people only buy it if they're really treating themselves. I think it tastes fine (not great, but definitely not bad).
That's not completely true, that would be the 1667 ("the kro") and other similar french non-beers. Stella is simply the base beer in Flanders (the base beer in Wallonia being Jupiler). Not good by any means, but still drinkable.