An RV is just an apartment on wheels. But when you have a spouse that suffered heat stroke (crawling into the burning vehicle to drag a passenger out didn't help it) during her career as an LEO you have to make some allowances. If she was restricted to a tent, she'd never get to go as we like to camp spring/summer/fall. Not much in the winter as there is not as much of nature to enjoy unless you are in an area that gets snow.
Up until our kids were around 4-5 we tent camped. In many ways it was more fun roughing it.
But I think you may be thinking of RV's being taken to "RV resorts" more than actual "camping" parks.
These are the type places we stay. For the more remote sites (like the latter photo which is Big Bend State Park) we have to tote our own water in and carry the honey-pot and the generator. It can be fun to get into some of those more remote sites, even with the 4x4 truck. When we had the smaller trailer it was much easier.
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