All the campers I've had were built terribly. Terrible insulation, terrible mounts for the camper jacks, poor use of space because of the wheel wells, the height is quite tall especially with a 4X4. The furnaces weren't efficient and the fridges were the pits. Even the arctic labeled ones aren't insulated like they should be IMO. I hate the indoor plumbing they put in there. Everything is cheap. The wood is cheap. The insulation, what little there is, is cheap. The hinges on the cupboards are cheap.
Yet, a slide in is my favorite way to go. I am making a custom camper to avoid the frivilous items that come with a factory camper and the poor build quality that is ubiquitous with all slide in campers. The slide ins are wider than vans and that allows one to add quite a bit of insulation while keeping a good amount of interior space. Mine is on a flatbed to make the most usable space.
Weight is a serious factor. If you can go small, go for it. I won't do slide-outs because they are heavy, break down, aren't meant to be extended for long periods of time (it's a camper, not a house), and leak cold air. If I wanted the hassle of living in a larger space, I'd live in a house.
You can sleep sideways even if you are tall which opens up even more space elsewhere. I'm 5'8" and have never had to hunch over inside a camper. I've scraped my head quite a few times in the doorway, though. If I get a bald spot, I'm blaming it on the door frame.
I like having a "bedroom" already set up and out of the way. I can't sit up, but they are easy to get in and out of with a small amount of practice. You don't need much cubic footage to sleep comfortably, so the cubby-like overhead is great. My friend has a camper and he hates sleeping in what he refers to as the "coffin".
I don't mind getting out of the camper then walking into the cab to drive away. Yes, being able to have a pass through is safer, but I don't consider walking out of a house a high risk behavior. Not the best comparison, but the risk of walking from the camper to the cab is not a big deal. But risk factors vary wildly from person to person, so that is very much an individual choice.
Since stealth is out with a camper and having a super cute dog doesn't help at all, I give little consideration to stealth. I give more attention to being courteous, clean, and polite. I'm really pretty, but not as pretty as I used to be, so I'm not relying on that as much as I used to.
While taking the camper on and off takes a bit of time, you don't have to tuck everything in every time you go into town. If you stay at places for extended periods of time, you could leave the camper and drive the truck. If you move from place to place frequently, then loading and unloading a camper is the pits.
I have little concern for side wind. Having frequently driven much, much taller rigs in hurricane force winds, it takes a hell of a lot to blow a rig over. It feels scary to the novice, but because it feels scary, doesn't mean it is a real problem.
I don't like driving tall rigs at all, but I want to be able to stand up and want a 4X4, so I deal with the height. Learning to drive 3-dimensionally takes practice.
You climb into a slide in camper. There is no stepping into it unless it is off the truck lowered near the ground.
When the truck needs to go into the shop, your home can be relatively easy to remove. If your van needs to go into the shop, then your entire home goes into the shop for however long the repair takes. If you have pets, this is more of an issue.