I know multiple people that own a car and will rent something for long trips. A lot of that is for peace of mind and being able to rent exactly what they need. Peace of mind is they don't worry the car will break down. And they can rent a car that is large enough or small enough for that particular trip. One trip it's them for a weekend. Other trip it's them and four other people for a week.

I've noticed that people that do this tend not to be 'car people'