I agree, to an extent. It depends on your plans and your situation I guess.
I've spent many nights in tents with very basic gear, several nights in the back of pickups, etc. A couple years ago I bought a 7' slide-in truck camper and found that is was just way more than we needed. It was extremely comfortable with a water heater, furnace, queen bed, refrigerator etc etc but my wife and I rarely used most of what we had. More often than not I was by myself, and found that the overall size prohibited me from exploring the places that I bought the camper to explore in the first place! My wife and I like to spend more time outside and the camper was really only supposed to be for sleeping shelter, minimal cooking and hiding from weather occasionally. I like backpacking gear but really neither one of us is really into super basic "roughing it" style camping.
I sold the camper and the truck, as much as I loved both, trying to find a better balance. After seeing the Adventure Trailers Habitat and Ursa Minor J30 for the Jeep Wrangler Unlimited, I bought a new Wrangler Unlimited Rubicon. Now I can get further off the beater path and explore more (I enjoy 4 wheeling anyway), and plan to order a J30 top. There is nothing fancy about the top, just room to sleep two on the roof. Eventually I'll probably run a dual battery setup, 12v fridge and stuff but don't expect to get too crazy with on board water systems and water heaters.
On the other hand, a big part of four wheeling and camping for me is playing with the gear and installing/modifying things anyway. I think that's the real reason I end up with too much crap as it is, I just like stuff...?