Hating smug, smarmy, condescending behavior is one thing. Hating a perfectly valid and useful technology is ridiculous.
If you NEED a big gas powered truck or other vehicle... you need it. If you don't and choose one of the newer less toxic (and in many situations less expensive) alternatives then that's no ones business (as long as you aren't forcing it on others). If you don't and STILL choose the gas guzzling truck, even if that seems counterproductive to me personally, that's still no one's business (as long as you aren't forcing it on others).
Enjoy your life. Be good to your fellow man. Do what is right for you, your needs and your own conscience but above all...
Don't be a *BIG MEANIE PERSON.
HTH
*Edited for CoC compliance and general forum harmony... ;-)