It's very hard to narrow down a human being to a single thing. I don't think there's anybody who does NOTHING except his main profession. I consider the case to be quite the opposite. I would say that most people do too many things that they find it hard to identify what they regularly do.
As for me, I do a lot things. But I don't have a "go to" hobby, except probably reading comics. I really love my job, and I gladly pursue it in my leisure time.
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