There is an option to auto-correct XHTML code automatically (Settings -> Writing). I would have liked to have this markdown editing as a switchable option. Sometimes I like having asterisks instead of bulleted lists. It's just my personal style.

I do the same with Google Docs, whenever a list is generated I have to press the backspace key to undo it and have a regular line. It's just a tiny thing that might get on one's nerves if repeated too many times.