Sounds like what I do. I'll turn on the A/C if I have passengers or if I'm transporting my kitten, but if I'm just commuting I can't bring myself to do it. Fan on full-blast, windows down at the beginning to get the hot air out of the car...I really can't say that the heat bothers me. I spend so much time cursing the winter, I'm going to soak up the summer heat for all it's worth!

msantos has a good point about running it from time to time. So far so good on my end, still blowing ice cold practically as soon as I hit the switch. (Note for clarity: Not a HCH!)