Why do
any comparables have value?
In the stock market, because if everyone in the world wanted to sell all their stock in some companies, some folks would snap up the opportunity to take control of at least most of those companies. Yes, this is several levels obfuscated by the time you get to retail investors (and if you look just at news media sources targeted at retail investors, it's almost all short-term reactionary bullshit), but ultimately that's the fallback for the system that is gonna keep prices non-zero. Very recent tangible example: Elon Musk willing to pay real money to take control of Twitter.
In the crypto market... what's the ultimate backing? Hope of various sorts of a future new world financial infrastructure, reserve currency, store of value? I've heard a thousand stories, none of them are true yet though.
Sure, if you believe in one of those futures, you should invest in the appropriate crypto tokens. You'll be better off if fewer of the rest of us believe in it now when you're about to buy, after all. ;) But if your analysis of where to put your money - trying to figure out what's likely to hold or gain value vs lose it - comes down to "eh it's all the same yolo" then just recognize that it's a gamble to invest in crypto - saying "I believe that it's also a gamble to invest in stocks" doesn't really make it a better gamble.