And lots of people pay for lots of things with bitcoin, today. It works fine, even if the confirmation takes 15-20 minutes and it costs five bucks. For some things where you prefer discretion, it's fine.
For privacy, just use a coinjoining wallet. It's a solved problem for a long time.
Commenters here are sour over bitcoin, for a variety of reasons, and ignorant at the same time.
I know it’s hard to imagine for the west but places exist where working around the local financial system is a huge benefit.