I would like the bold and italic button to be removed from the ask question window.
The reason is, that these features can easily be abused by unexperienced, amateur users lacking the knowledge of how to layout texts correctly.
This is subject of concern to many of the better, more experienced SO users. As for evidence, look here:
Here, a feature request for adding a color picker got a voting of -14. Some user writes:
Having colors would enable people to abuse them.
and gives some very nice of example of how colors can destroy the visual appearance of a text.
The same user does not seem to object bold and italics, possibly because the abuse of these features does not happen that often (as another user writes). But as to my own question, linked here - My feature request - a user clearly dislikes my use of bold in the question text (only used at two wimpy places), and after giving it some thought I think he is absolutely right.
From this evidence it gets clear:
text emphasizes peril the visual appearance of texts as much as colours, even if used moderately. How many ugly looking questions may there float around in SO, hurting the eye?
Secondly: stupid users prevented from using their beloved Facebook colors will the more be tempted to use emphasizes as a mean of expressing their (very mediocre) thoughts.
So, the danger of low level users abusing things like text emphasizes must be removed - stop things getting wrong right from the start.