Okay, the "winners" are Levian, psyniac_123, RedXIII13 who picked the Dining Room.

The answer follows:

It's a room my pants have been in. - irrelevant
My pants are allergic to eggs. - no kitchen
My pants like things hanging on the wall. - no closet
My pants dislike loud noises, unless they are sanitary. - no garage
My pants are afraid of Mr. T. - no living room (television)
My pants aren't organized. - no closet
My pants hate hugging ankles. - no bathroom
My pants are afraid of bears. - irrelevant
My pants have two legs. - irrelevant
My pants hate being wet. - no laundry room
My pants are mortal enemies with uncooked rice. - no pantry
I like wearing pants. - irrelevant