I know this is an odd question but I am on the cold side and everyone I know seems to prefer hot sandwiches.
I would go as far as enjoying cold pizza over hot pizza (aka leftovers from the fridge) but I know that I have to be in a very small percentage with that.
I typically eat sandwiches with vegetables on them so them being cold is ideal in my book. On the rare occassion I get a sub from say Subway, it is always a vegetable one with no meat as well.