Even if it's not primary, it's in the mix. Some people love what they do, and will do it almost to the exclusion of anything else. If you are passionate about something and can make it pay the bills, it might be a pretty good career choice. Working because you're good at something isn't a bad idea, but it isn't always a good idea, either. The team .
Some people work best by themselves, others as part of a group.
For many, the workplace is their primary social experience. If this is important to you, why you work is defined by who you work with. Understand why you work, and you become compelling, too.