Depending on where you live:

* It's cheaper to buy than rent in many places.

* Unless you're in an HOA you can do more with your land, such as farm it, put a pool in, etc. Shared spaces aren't common in many places.

* Pets can often make renting impossible, especially dogs.

* Americans like physical privacy more than many Europeans. (Online privacy is a whole separate issue).

* Most rentals don't have much land, some people really like having more land.

* Rentals tend to be in places that are less affluent and offer less amenities.

* School systems are often based off property taxes so places with more home ownership tend to have more money for schools.