Ask HN: Markdown or WYSIWYG editor for non-technical users?

I'm designing a web app that will include a text editor to be used by non-technical users. I'm trying to decide whether it should be a markdown text editor or a WYSIWYG (what-you-see-is-what-you-get) editor.

For those of you who work with non-technical colleagues who have to use a markdown editor, do they hate it or grudgingly tolerate it? Or have they adapted perfectly fine?

Should I forget about the Markdown option for non-technical users and just go with WYSIWYG?