OK, I've posted questions about insulating my house, which is a mix of wood stud walls and block walls. One more question (at least for now), as I fine tune this project. One wall of my house is shared with an attached garage. The garage is not insulated, nor heated. The wall shared with the garage is a block wall with brick on the exterior, so the brick can be seen when standing in the garage. Since the garage is an attached enclosure, should I even bother insulating this wall? Is there much heat loss occurring through that wall?