Stupid people electing smart people to lead them?

Why do we think some people have to be our overlords? I think for most things people can get along just fine and this has been proven. But government officials always try to interject themselves. Mutual agreements and understanding are a good thing. But think about it. People are allegedly too stupid to make good decisions, but they are smart enough to elect politicians who will make the good decisions for them on their behalf for millions of people. Something wrong with this “logic”.