I'm not referring the technology itself. That's actually quite useful with real-world applications that may be worth investing in. The ticketing use case and also Gamestop's rumored use of NFT for reselling digital game licenses are actually awesome ideas. I'd invest in companies using this technology provided they had a valid business case for it and aren't just chasing the hype.

The craziness i'm pointing out is the apparent sale/purchase of NFT tokens for lackluster pieces of digital art at insane amounts. You aren't really investing in the technology in this case, you're investing in that piece of art. It confers no proven legal privileges, meaningful ownership or protection from being copied. It just gives you the ability to prove to someone that at a specific point in time you made a token for that bitstring or bought it from someone who did. Would these pieces fetch the similar prices on the art market right now where you can actually buy real proven legal rights/ownership of the piece? I highly doubt it.