I think they will last for a long time as long as they evolve with time.

Ofcourse, I don't think any people will buy the same monkey artwork since many artists now are interested in NFTs because they provide a new way to monetize and protect their digital artwork.

NFTs allow artists to prove ownership and authenticity of their work, and the unique nature of each NFT means that they can be sold as one-of-a-kind digital collectibles, which can potentially generate significant income for the artist. Also, NFTs give artists greater control over their work, allowing them to set the terms of the sale and retain ownership and control over their intellectual property. Overall, NFTs offer a new way for artists to earn revenue and gain recognition for their digital creations.

if we want blockchain technology to be accepted by people, then we should be happy with this. It's a win for all of us believer of blockchain.