I suppose I can be serious this time.
Generally, I like everything in front of me. When I ride a bicycle on back roads, I ride on the left side so I can see cars coming at me. When I have a desk in an office, it faces the door. In a restaurant, I like to sit where I face the flow of traffic.
But I don't put any thought at all into defending myself from some sort of attack. The chances of something like that happening are, in my opinion, so low that it isn't really worth acting on. I'd rather sit with my back to the door in a restaurant than wait ten minutes for "tactically correct" table.