Yes I know, It has a chance to become it a real currency or maybe a legal currency. Your also right about it migjt be used to an illegal activities because crypto world is very broad to discuss or to study its abilities or limitation. But as of now, I know it is in the discussion on how we used it because Bitcoin has many lacks so we need to find a way full that lacks of bitcoin to recognized it.
So even though the reason bitcoin exists is not investment, if it means investors will come in and stay than I am fine with it, let the price go as high as possible because if that happens than people will flock to it and we will see increasing amount of stores that will start to accept bitcoin.