The reason i hate sharing room

If sharing room doesn't give me problems then i am ok with it. But fact told me that problems are unavoidable...here is one good example....we have 3 person sharing a room and there is only a stand fan , so normally we will make it spin so that everyone get it...but yesterday nite..damm..one of them just make the fan facing one direction which is directly to himself only...i remember before i sleep the fan was in spining direction. I feel that this is just too selfish. But luckily yesterday the temperature of the room is quite cool so i just leave it as it be. Damm it!