I'm of the mind that no matter if you believe in global warming or you don't, it can't hurt to do a few things to reduce your greenhouse gas emissions.
I've done more than most people I know, but there's always more to do. I haven't had to drive my car to work for going on 18 years now for one thing. Huge reduction right there. My home uses natural gas for heat, and I turn down the thermostat every night. I shut lights off in rooms I no longer need to be in, and I don't waste water. I run my washer and dryer full every time.
I installed water displacers in every toilet in the house about 15 years ago, so my toilets use about 1 litre of water LESS on every flush than without.
Saves money, it's no bother, and it can't hurt to be at least a small part of the solution I say.
http://www.wikihow.com/Reduce-Your-G...-Gas-Emissions
I don't see where it's such a big deal or imposition to do a few of the things listed on that page.