If you turn off the Rich Text Editor, its just a blank text box... no helpful buttons. I want to keep those buttons.
Why is the cut & paste mechanic bad? Because my website has multiple skins, both light and dark. If someone is using the dark skin, and cut and pastes text from my website (which is white), it looks fine to them in the text editor; they won't even know that they also copied over the white text color tag. However, to someone who is using the light skin, the other user just pasted in white text that they can not read. The same happens vice versa.