Why are you downvoting?

Look here for example.

Let’s not discourage discussion by downvoting people that “are wrong”. It is hard enough to correct your mistaken beliefs, if a community is pushing you away for having them this makes it even worse.

The thumbs down button should be for posts that are bad, if someone says something you don’t agree with it you should argue instead. It’s unhealthy to just push away people that have different views, rather than challenging yourself to explain why they are wrong.

Here is an exercise that will help improve LessWrong: watch for reasons why you downvote comments you do the next couple of days.