I’ve added a new Service to the Markdown Service Tools for stripping out Markdown formatting, leaving just plain text. It’s not something I do often, but I’ve received a couple of requests for it and it does have its uses.
By default, the Service (md - Convert - Strip Markdown) will also remove the leaders from list items (*, +, - and 1.). To turn this off, open the Service in Automator and edit the first line of the script to read:
$strip_list_leaders = false
This will leave all of your list items bulleted.
Let me know if you have any trouble!