My CPU used to get too bloody hot, and my room didn't help during the summer either.
I suspect the place I ordered my CPU from cheated me out of a HSF rated for my CPU. (They were shoddy in other ways and have since gone out of business.)
So I am in the minority because a big reason for my move to water was to keep my little XP 2600+ cool during the height of summer heat.
Admitedly, I suspect a good air cooler would have fixed my problems, but that wasn't good enough for me.