Each time I visit this site, I often see that a question has no good answer in the answer section, but actually several good candindates for answer in the comments on the question.
Why are people here so reluctant to post their brilliant suggestions as an answer?
See for example this question. Here we see that there are two answers, but they are obviously wrong, and properly down-voted (proof that the SE voting system works as intended).
In the comment-section there are several answers that are potentially the correct one, but since they are posted as comments, and not answers, they are drowning in the long list of comments on the question.
If they were posted as answers instead of comments, it would open up for comments on each suggestion, instead of a long foum-like thread in the top comment on the question, that is hard to find out what is actually proposed.