I don't like voting at all, since it favors the democratic dictatorship of opinion.

So, the positive thing about voting is: stupid or nonsense comments can be marked as such.

But the negative thing remains: sometimes the truth (read: reality) is not popular at all, and seems to be wrong for the majority of audience. And since such comments are always voted down, you end up building your opinion only on a democratic base -- but:

Democratic Opinion Dictatorship Is Evil.