consider this similar scenario pls: man with small penis: it's a failure of 99.9% of women that they prefer other guys
Actually, it's not a failure of Bitcoin or its users that adoption is still low. It's a failure of the 99.9% who trust in a centralized, manipulable monetary system that Bitcoin aims to replace. In both cases, it is about personal freedom and self-determination, not acceptance by the masses.
Let me correct myself, Bitcoin is not trying to replace anything. It simply exists.