Here's an example of an NFT use in the real world. The NFL (football league) has started fazing out selling real paper tickets to fans. You buy a ticket digitally and the barcode is scanned on your phone. Back in the days, fans liked to have a paper ticket they could have to remember the event, maybe their birthday or some record breaking play happened. The NFL is now selling commemorative paper tickets for a specific game to fans that is essentially an NFT. The fan had to have purchased the actual ticket and attended in order to buy the commemorative ticket.