Why do YOU want to save gas?

[McPatrick]

I was wondering this week what the various reasons are that members here want to save gas. It seems for some it is a sport in itself that doesn't really go beyond saving gas.
I read a thread about water saving shower heads and only a few people seemed to be interested in this. So not everybody is here to save the environment. Another reason, just as valid I'd say, is saving money. I personally like the green side of it as well as saving some money. But then I will also keep driving home thirsty for another hour because I do not want to get ripped off for a drink at gas station prices and I'll pack stuff to eat when we go on trips with the family instead of spending $10 plus dollars eating trash at a fast food restaurant. So for some people saving gas fits in the whole picture of saving money and/or helping the environment some.
I guess it becomes more of a sport when you start spending more money on gas saving items than you can ever hope to get back in fuel savings. It is as good a hobby as any other I guess.
There are possibly more reasons to be here and be a 'gas saving nut' and I am curious what your reason is.