not OP, I live in Germany and 2 things happen with Geo-IP:
1. When I look for English words on Google, it prioritizes german dictionaries, sometimes for many pages instead of a) English dictionaries OR b) actual English pages relevant for that word
2. When I search for programming stuff, it prioritizes german pages, such as blog entries to the english documentation/english blog entries, which I find in any case more complete and diverse. Some peope prefer reading everything in German, but that is just not my cup of tea
can't remember I've ever searched for "restaurants near me" instead of using a map app or a self-choosen identifier. (And given e.g. Google Maps (on web) doesn't even reliably get the state right for my initial position, why would I rely on geoIP for that?!)
I mostly use it when I do second language searches and it is like using search in that country.