I agree in TX, I mostly see V6's, but I do see a fair share of V8's, too. I also would say a majority of people get the 2WD.
We probably really don't need 4WD as much of a "necessity" in TX, unless you live in the Hill Country or West Texas.
I think the reason that most of the people here have V8 4WD is that the type of person that will look for a forum for their vehicle is usually an "enthusiast" and enthusiasts often like to buy the biggest and baddest possible. There are certainly some enthusiasts here that have 2WD V6's, but there are also a lot of people who drive those just as a commuter and don't have a "passion" for 4Runners, it's just another car to them.
Personally, I probably don't need 4WD or V8, but I wanted both of them and the incremental price and the incremental mileage hit seemed trivial compared to the gains in HP and capability. That's why I went that route.