If you see it as a bubble/scam, why wouldn't you warn people away from it? Especially your friends and people like them? Also, bubbles that grow large enough c

If you see it as a bubble/scam, why wouldn't you warn people away from it? Especially your friends and people like them? Also, bubbles that grow large enough can have an impact on the larger economy when they burst. Probably the Ethereum bubble, assuming there is one, won't get anywhere near that large before it bursts. But if it's successful, it will be replicated on a larger scale. (By successful, I'm not talking about the value of ETH, I mean that financial players make lots of money without significant consequences.)