I'm an outlier indeed, but plenty of people live or travel in countries that use languages they don't speak or prefer, and don't want find themselves redirected to websites they don't understand.
Spanish speakers (in Spain at least) tend to come from google.es, which prefers Spanish-language results, or from Spanish language links and discussions.
It is wrong behaviour to choose my language based on my location.
Google.es doesn't seem to work that well, in certain circumstances. I often write in Portuguese and when I do searches with words in that language, the results come up almost entirely in Spanish (even when placing the phrase in quotes).
Given, they're "similar" languages, but I would think Google would recognize "não" (no), for example, as belonging to the Portuguese language (especially since it's the only language that uses that word).
Spanish speakers (in Spain at least) tend to come from google.es, which prefers Spanish-language results, or from Spanish language links and discussions.
It is wrong behaviour to choose my language based on my location.