Because we’d like to have a system that can not be manipulated or controlled by a single entity?
You still do though, that’s the entire point. Whenever your token interacts with the real world who ever is doing that is a single entity controlling the process.
Make the smart contract that forbids multiple transfers, or make transfer more expensive after the initial purchase (unless authorized by some pre-approved address and/or an address that has an associated real ID)
So less protection against reselling than a ticket with the name of the person who originally bought it, while also milking large amounts of transfer fees to now have a much larger token with code in it. Why would you you want to have a more complex, more expensive, less good system?