Vitalik has said that after the PoS system has been implemented no more tokens will be generated or created. After the POS mining will become irrelevant and no one will be interested in mining Ethereum. They will all try to buy ETH from the other hand to make sure that they have enough stacked up, in order to validate transactions and receive some of that transaction fees directly to their wallet. So miners will be replaced by validators or common people holding ETH and locking it up and in that way the entire network will become very decentralized and attract even more attention from people and respect from other coins. That's a big issue nowadays, everyone is talking about decentralization but no one implements it.