Often on forums, the main post can be simple and contain only text. And comments on this post may have more value than the post itself. For example, I want to create a community for developers where they will often share code snippets. However, now there is no way to share the code in the comments, because there is no even the simplest editor in the comments.
I found that markdown is supported in the comments, but this will be inconvenient for most users.