It depends on what sort of trips you take, I guess. If I'm taking a road trip, it's to see stuff in the area I'm driving through. I rarely drive more than 300 miles in a day. If I want to get someplace I'll fly and rent a car when I get there. I did say for a lot of people, not everybody.
A lot depends on where you live. When we lived in Vancouver, we were never more than a couple of hours away from anything that we wanted to do. Here in DFW, it's hundreds to thousands of miles. (Unfortunately, Vancouver is way too expensive to live in anymore.)