While bitcoin is definitely used for selling drugs or other illegal stuff (not saying I think drugs should be illegal, quite the opposite is the case), I think

While bitcoin is definitely used for selling drugs or other illegal stuff (not saying I think drugs should be illegal, quite the opposite is the case), I think its use and - more than that - its value increase over the years goes way beyond that. People see it as asset, don't trust their currencies, buy it because of the hype, ... . Even when its use for selling/buying drugs vanishes (which will definitely not be the case everywhere in the world) bitcoin would't lose to much value because of that, in my opinion.