We often had this same debate at the Y. With or without "hot" spin classes, there will always be people who prefer a fan and those that don't. I fell into the former group, but I have some heat intolerance issues and I understand why somebody wouldn't want a fan blowing on them during a workout. At one of the branches I frequented, the room was big enough that we could have temperature zones. One side of the class had a fan; the other didn't. At another branch, you just had to be really strategic with where you set up a fan and where you set up your bike. In any event, I would talk to the instructor and/or gym managment to see if a compromise can be fashioned. It shouldn't be something that members are fighting about amongst themselves.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher