Bitcoin is a Ponzi
Bitcoin would have remained the obscure crypto-economic experiment it was 10 years ago if it weren't for the rotten monetary system we have creating strong incentives to look for alternatives.
I'm holding some Bitcoin for quite a while now - in terms of value it has overtaken all my Fiat holdings - yet I would actually welcome if it became worthless. That's because I believe that it can become worthless only if we get back to a sound monetary system, something I'd value more than individually "winning" in an alternative scenario.