I actually like to go get a bite to eat on my own and have seen a few movies on my own. A few folks I know are amazed because they could never go out by themselves. I think that if there are things you enjoy and you want to do, why not do them! If you can get friends to come, even better.
Cities are funny places. You're not quite so alone in your neighborhood when you meet all the people that live and work in the establishments around you. I know the bartenders and the bagel makers as well as the local sushi chef. That last one is a bit hard since he notices when I don't come back every week and gives me a hard time. But cities are places you can do that. I certainly couldn't do that in Austin, at least not where I was living on 38th street. But my friends lived further away there as well, so I had to drive. Here many of my friends are within a bus ride or a short walk. Makes it easier to run into them unintentionally on the street, which always feels good.