2 wheel drive or 4 wheel drive

A little late in this thread but here is my spin. I have never owned a 4 wheel drive anything and have only been in a few situations where it might have been needed. I just ordered a 2015 dually as we are pushing the limits of our single rear wheel truck and we do take some long trips. I ordered my 2012 as a 2wd because there was not one anywhere around. It is a real workhorse and never an issue with the 2wd. However, my dealer was hesitant to deal with me because he says my truck is not very desirable not being a 4x4. I have been a customer for many years and because of that he finally gave me what I consider to be a very fair price. I get to keep my truck till the new one comes in and he asked if I would try to sell it on my own, which I will at some point.

I decided with the money these things cost I need to bite the bullet and get a 4x4.