NFT works like every other crypto-investment there is no much difference between NFT and ICO or IEO all are tokens with different use cases and perspectives. So you can buy artworks like NFT and resale them when the price gets higher.
Yes, now NFT is in a good trend and has also been used by several new projects and some are already successful, so if for now there are those who are interested in NFT I think that would be very good.