We each have 25 votes per day. I do believe that qualifies as a quota. I've just been going over some of your answers and so far haven't actually seen a problem in the voting. e.g. This answerThis answer got a couple of downvotes, complete with an explanation. Although you apparently don't accept that explanation it has been posted in is perfectly valid. ANY security software that hasn't been updated in 2 years is worthless.
Some of the reasons a comment should not be required for a downvote are:
- It encourages retaliatory voting patterns
- It would in many cases result in a whole lot of arguing, which is not what this site is about
- Why should a downvote require a comment when an upvote doesn't?