99.9% of people don't and won't use Bitcoin other than a speculative investment. Bitcoin transactions on white markets make little sense, since you're following the arbitrary rules of the state on there anyway, why no just use fiat for that? faster, cheaper, not taxed, no regulatory uncertainty, and much larger network effect.

It only makes sense when you want to make a transaction that breaks the rules and can't be stopped AKA free markets AKA black markets (doesn't necessarily mean immoral, just illegal for your jursidiction). And while you're making that transaction it only makes sense that you don't want the state to know who you are and what you're doing through anonymity and privacy.