Better than disabling it:
- Understand it - low score boils down to "people don't want to see it". Everything else is assumption, and should be taken with a grain of salt.
- Deal with it - you won't be able to please everyone all the time.
- Vote - if you see some post/comment that you feel like undeservedly downvoted, by all means, upvote it.
I still wish that downvoting was multidimensional though. Negative feedback is important.