Sitting here eating brunch and all these people leaving the restaurant stop in front of my booth while I'm trying to eat in peace, and start conversing. Why a

Sitting here eating brunch and all these people leaving the restaurant stop in front of my booth while I'm trying to eat in peace, and start conversing. Why are people so unaware and rude? Seriously, they were like 4 inches from the edge of my booth loudly talking.