and it helps you learn how to think....
One of the challenges in teaching economics is that many come to it with incorrect expectations - people seem to view it as akin to accounting or finance. In a liberal arts setting, the students (and their parents) may believe it is the closest thing they can get to a business major (this paper provides evidence on this point).
This short video from the American Economic Association - "A Career in Economics - It's Much More Than You Think" - does a nice job of correcting some of these misconceptions.
However, I think the video misses one of the main reasons for studying economics: the habits of mind - "critical thinking skills" - it helps students develop (I wrote more about this here). Most of our students aren't going on to careers in economics, and they will forget many of the specifics, but being able to think coherently about tradeoffs and the linkages between assumptions and conclusions is a lifelong benefit.
So, yes, people who are interested in business should study economics, as should people who are interested in a career in economics (my own advice about that is here), but so should everyone else!