I felt the same way. For a long time, I didn’t get what the big deal was. I write for a living, and I’ve never been in a situation in which using Markdown would make my job, or my colleagues’ jobs, any easier to do. (And I’ve asked.)
I didn’t let that dissuade me from eventually learning Markdown, and I don’t think it should dissuade you from learning it, either. It may come in handy some day. It’s certainly not difficult to learn. For me, the only difficulty with Markdown is in making it applicable to what I’m doing. I could write everything in Markdown, but I’d still have to find a way to get that copy into Word so that other people who don’t know or don’t need Markdown (i.e., everyone I work with) can work on the document.
About a year ago, I made the decision to use only Markdown when writing anything in Devonthink Pro, just to make sure I’m adept at using Markdown should the day I need to use it ever arrive.