as has been mentioned, I think you've missed the point of ExPo....the 4wd stuff isnt the fun part, its the journey and its the stuff at point A, point B, point C, point D....the 4wd stuff is just something that kind of gets in the way. Don't get me wrong it can be fun but can also end up being a costly mistake. Thats why, while a lot of rigs have a lot of 4wd goodies generally its best to avoid the obstacle if you can. 4wd isnt the focus, its how are you going to sustain yourself in whatever vehicle you choose. the question becomes, how far out there is your destination, how far out can you handle. Lets see if I can put this in terms you would relate to....
As a service member who has also lived for days out of an MRAP a few times(a collection of probably the worst few days of my life) Imagine this. You're in AFG (imagine you're a local so no Taliban) and have to drive from one side to the other and you can't take HWY 1.....oh btw you can only take one vehicle. so now you have a lot to think about, how far is that? how much fuel will that require? how far between stops? do I want to be comfortable.....at all. one more thing, you're paying for the whole thing out of pocket. So now, would you drive over the more hardcore stuff burning more fuel, risking breaking your equipment? or would you take some of the well worn paths and trails. would you bring a spare half shaft, 3 spare tires, a couple of buddies to help recover and fix things or would you take more food, water and fuel...some people have more means than others which generally dictates the answer to those choices. most people can't afford to get stuck at point A, point B, point C and generally just don't want to, recovery generally isn't a lot of fun.
Thats more of the idea of expo, in my mind anyway. Do I do this on a regular basis? no, these days I hardly go camping. But given the chance(2 weeks of x-mas leave or a 4 day weekend) I generally like to drive to somewhere cool. I also like working on my truck, so it gives me two hobbies really....
Edit: Similar example I'm on Xmas leave right now, I'm burning days waiting for my rear bumper which holds my spare tire. I was planning on doing Baja with a group but don't really want to w/o a spare. Packed up ready to go there really isn't room for it inside the vehicle. I would be sleeping inside the truck bed and don't really feel like loading and unloading it every night. I could put it on the roof rack but I'd have to find a way to hoist it up there all by myself. Instead of Baja I'm gonna head down to the Gulf, now do I wait for the carrier or just go...and if I go w/o the carrier wouldn't you say that is going to affect my route?