How does everyone feel about being caroled? I know it's anti social but I don't like them. You have to open the door and stand there while a group of strangers sings to you. Meanwhile it's 10 degrees outside and all your heat is going out the door. It's rude to shut the door in their face and when they get done you feel like you should tip them or give them some hot cocoa. I know they are doing it to be nice. Thoughts?