Is it better to find a job you love that pays bad, or find a job you're not so passionate about, but pays enough?

I've always heard that finding a job you love that you'll never get sick of is best because you'll do your best at it the entire time. But I've been asked questions in school such as "What do you want to be when you're older?" And I'm afraid to say that I haven't got a clue.

I've been told I'd be good at several different jobs, but none of them seem to be anything I'd actually enjoy. Also, some jobs require more schooling and are very expensive, and I'm cheap, even though I'm not even old enough to drive.

And what if I get into a job I think I'll enjoy, and then maybe a few years in I find that I actually hate it? I've still got several years to go before I have to worry about any of this, but I've been asked these questions in assignments for school and it's got me thinking.​