Would you feel weird eating lunch/dinner at a seafood joint at a table by yourself and then just leaving alone?

The question could apply to any restaurant. Pizza Hut. TGI Friday's. Burger King. Outback Steakhouse. Whether it's at the booth or at the bar. Whether it's a late-night munchies run after the bars close, how do we feel when we see ourselves or someone else going to dine alone at a restaurant. For the sake of argument, let's say we're not talking about an old, weak widower nor are we talking about a business-man out for lunch at noon in a Brooks Brothers suit. Let's say 16-50 year old average young adult/adult....