I was in the same boat you were. I bought a diesel with all the intentions of towing my jeep all the time. After owning one, I have to say that if you don't need a diesel for work and towing a trailer all the time then its a waste. I went back to a 1/2 ton, cause I had no need for a diesel. I have a 05 f-150 crew cab 5.4 4x4. I get 15-16 mpg highway, and about 10 mpg towing my xj. In my diesel I got 15mpg all the time, towing dropped to about 11-12.
2012 Can-Am commander 1000 X
2012 F150 SuperCab 4×4