I don't believe in Crypto.
I take it you mean as a worthwhile investment, not like "santa" or "the tooth fairy" ...
Yeah, I was very bearish on Crypto for a long time but there is so much institutional buying now from big, BIG financial companies, that the chance of it going to zero is probably zero.
In the meantime, the returns it provides and the potential hedge against inflation long-term are hard to ignore.
It's well worth putting some time in to learn about it, how it works and why it works, to better understand it properly. Your opinion of it may change when you do.
But you have to wade through the "to the moon!" crowd of shills to find those who really know there stuff. I can recommend watching talks by Andreas Antonopoulos which are very informative (aantonop on YouTube)