To someone with a technical bent, it (NFT creation and sales) seems pointless and crazy, but it's no more so than things like fiat currencies or stock shorting.

Essentially, people are gaming human psychology to trigger the desire to "own" something and creating an artificially limited supply of that something using crypto (which may as well be a cut and paste replacement for magic as far as most people are concerned).

Limited supply + desire = high prices for acquiring whatever is desired.

High prices plus near zero production cost for the "item" means lots of profit for little effort, hence all the interest in this right now.