Im driving one too (pickup)(. The earth will not live or die on my choices alone. I see lots of dual wheel and and F250s 350s taking their kids to school. doing daily driving groceries ect. Probably only a realistic fuel prices will curb that kind of behavior. The earth wont die, but some of the people may. Fracking is what is stalling adoption to electric thru low gas prices.
Now to totally blow your mind, my F350 crew cab diesel 4x4 pickup gets better mileage than many (most) minivans! So taking the kids to school can actually be better in the big trucks. When towing or hauling, the mpg goes down a lot. When towing our RV trailer (400+ miles just this weekend) I get 12 mpg which is the same as the half ton guys get when towing.
If I didn't have an RV to tow I could get away with a smaller pickup but I would not gain much in mpg. If I lived where I didn't need a pickup then I could really get a gas or electric sipping car instead. Oh and I've done the math, buying a second vehicle for high mpg does not pay for itself given the need for insurance on the second vehicle. If fuel prices doubled or tripled, then maybe.