Do you enjoy being alone? Would you rather be around other people?
I go through phases of liking both. I am an only child so I can be alone; it does not bother me. Now that I have a family, I do enjoy the time that I get to spend alone because those moments are few and far between.
I mostly don't mind being around other people especially if I know them. My husband comes from a big family, and I love to be around them when we get the opportunity. I can get along at a party of strangers, but don't always feel like I particularly have to be social. I don't have to be the center of attention and can float back and forth between talking with people and standing around observing the scene.
I do need my down time each day for myself. After school when I have been with students all day and after I have decompressed with colleagues, when I get home, I need about a half an hour to do what I need to do before we can start homework or dinner. My alone time gets me through the social times.