NFT arts is actually not an investment asset from my opinion because we actually don't know the demand and value of the art so its simply going to sit your data storage and you can claim that you are the only one who is having it, nothing more.
Yep, I have to admit the fact that NFT is not much good enough as investment asset than fungible crypto currencies, stocks and so on. But I think it is cool and security enough to be the next generation of collectibles.