According to GAMA statistics, there are 611,000 active pilots in the United States and only 223,000 registered general aviation aircraft. Even allowing for air taxi airplanes, clubs and partnerships, this means that lots of us are flying airplanes that we don't own. Some of us rent from local flight schools, some borrow from friends.
This is a companion discussion topic for the original entry at https://www.avweb.com/ownership/renters-insurance-know-the-exclusions