I say keep the 4runner. As a fellow 2wdriver, I'm more than pleased with my selection of vehicle. While I would not have said, "No", if a 4wd was available when I was searching, 2wd suits my needs fine (because Houston is flatter than Kiera Knightley's chest).
I got the truck for it's reviews, longevity, and MPG (which REALLY is not bad if you don't drive like a complete ass). It's quick and powerful, can tow 5k, and can haul a BUNCH with the seats down. That fact that it looks BA is a very nice perk.
As a side note, I find it ironic that everyone here is saying to keep the Toyota because American doesn't compare, but when I created a thread a couple months ago that laughingly pointed out the people in the Mopar and Chevy forums that were OH SO EXCITED to get to 200k, it spawned 2 pages of arguing ...