You will find people doing something that they enjoy, and being ecstatic with it, including people who find living full time in a van. They are comfortable with the limited space, the limited possessions, the limited wardrobe, the more intimate interaction with plumbing, and consider these things easy trades for the ability to travel all over. Then you will see the YouTube channels who show all this in glamourised potpourri making limited allusions to the interaction with the plumbing and the relatively limited (or more complicated) hygiene.
I say nothing against those who actually enjoy that trade off, but I know its not for me. (I use my van as a mobile office, if you don't know me, and I return home every night.) I don't consider the great out doors my favourite tourism spot (I like exploring towns and cities, not parks), if I was traveling I would have no desire to be cooking my own food (local eateries absolutely being a highlight of travel for me). People see someone else's dream, and how happy it makes that person, and think that if they live that person's dream, they too will be happy.
The truth is we all have our own ideal thing that will make one happy. What will make the people who really enjoy full time van life happy will not make everyone happy, just people for whom the benefits of it are highly desirable, and the drawbacks tolerable. My parents had a great and happy marriage, and one of the reasons for this was that my parents lived in a large ranch where my dad's haunt and my mothers haunt were on the opposite sides of the house maybe 80 feet apart from each other and they couldn't hear the other, so their alone time was absolutely alone time. My wife and I, on the other hand, spend a lot of our home time together laying on two couches separated by a coffee table using different electronic devices. And we are fine like that; my parents wouldn't be.
The people who go into this as a retirement project inspired by YouTube are very unlikely to survive it. There are several reasons, but the big one is they are approaching retirement age, and still looking at what other people are doing attempting to find happiness. I have a very clear idea what I want to do for retirement, because its always been what I enjoy doing: being away from other people (my wife excluded), attempting to figure out how to make older stuff work in my every day life, tinkering with various older things, repairing older things, or building new things primarily using my own ideas. Like Frankie said, I do it my way!
I like watching other people do what makes them happy; I like seeing happy people- its why I fell in love with rural Lancaster county. I'm not under the impression that me doing these things will make me happy; I'm a different person. Nobody should buy a van to convert into an RV without renting a similarly sized vehicle and spending a few weeks with it. I'm damned sure by now there is no way my wife and I will ever use this as a camper; that's not what we enjoy doing, but the idea of using it that way was entirely secondary to the primary idea of me using it as. mobile office the way I am using it this very second.