I guess it depends on if you're talking about Bitcoin itself or crypto's in general.

I could see a situation in which a basket of like the top 10 biggest cryptos could make a good addition to an investment portfolio, particularly because of their unique price behavior, which could actually potentially reduce risk in a portfolio.

I could also see, as more billions come online, the need for some kind of cryptocurrency. But a lot of the explanations offered so far are unabashedly optimistically biased - in reality, they aren't wrong, but things just aren't so certain. In my opinion.