I'm with you there.  Just like ICOs, exchange tokens, and probably some other forms of crypto before them, NFT owners/enthusiasts will eventually realize that those super-duper-unique "tokens" aren't worth nearly as much as they're selling for.  That was my first reaction upon hearing about digital artwork in the form of an NFT, and I'm sticking to it.  The only question in my mind is how long it's going to take for the market to crash.  It could be a while, but in the interim I'm going to remain a no-NFT'er.

Bitcoin (and a lot of altcoins, too) isn't in a bubble, however.  As far as how long it'll take for the world to accept that crypto is something real and valuable, I'm betting it'll take a generation--15-20 years or so.  That's because older investors see crypto as an oddity, something that isn't quite a viable currency and definitely not a stock, and they're not having any of it.  The newer generation, however, will have grown up with bitcoin already in existence and it'll be familiar to them.  Whether they'll adopt it or not is a question I don't have an answer to, but I'd bet they'll be more likely to than the older generation(s).

BTW, I thought bitcoin was a "tulip" when I first heard about it, which was way back when it was skyrocketing past $1000 and Mt. Gox was imploding.  Then I kept watching it and people's conversations about it, and it became clear to me that it wasn't just a fad.