What purpose does downvoting questions serve?
I've been using SO for a while now, and I've noticed that some questions get voted down without people saying why they vote down.
My understanding for when one should vote down, is:
- The question is offtopic (probably the most common closing reason)
- The question lacks information
- The question is subjective and argumentative
Besides these reasons, there seems to be a hundred other reasons why people see the urge to vote down.
The question is, why would someone vote down a question, probably wanting to make future questions better, and not comment on it?