Because holy hell, I've now tried to work it out for Atom, Sublime, my entire Chrome browser, the possibility of writing in Markdown (which I hate), and DW itself. I'm willing to roll my eyes and draft out posts somewhere else, but I'm trying to avoid installing stuff just for DW, and I resent the notion of having a whole new program just for using HTML.

I just want to be able to select some text, smack down that sweet ctrl+i, and have that text be wrapped up in < em > emphasis tags. Is that so hard?