Firstly, if you have a camper you probably want to take it out many times a year, and even if you just have a tent, an SUV is pretty nice for all of your other supplies. Moreover, it’s not any one use case that justifies an SUV as much as a combination. If you have kids
and you camp
and you bring bikes
and you have jet-skis, ATVs, dirt bikes, snow mobiles, or other toys then it quickly becomes worthwhile.
My wife and I upgraded to a small (electric) SUV and it’s absolutely been worthwhile just for extended roadtrips and camping with our dog and maybe a friend or two.
I’m sure plenty of people get big vehicles for prestige/whatever, but I was refuting a specific claim that use cases for pickups are rare and SUVs should be banned altogether.