When someone leaves your house, be thoughtful enough to stand at the door and see them off. Who wants to spend an entire evening with friends or family only to look back fondly, your heart warm and your belly full, and see the front door shut tight and the house already dark?
Yuk.
I learned this nicety from my grandparents – two people who literally exuded love. My fondest memories are seeing them huddled together at their front door, under the porch light glow, smiling, waving, and blowing kisses as we turned the corner.