Ah. Okay... ??
What in case all coins have been premined, as it can be seen with some AltCoins ?
No new blocks mined = no transactions confirmed. Without mining the network dies.
Of cause!
Minging will never end and the last Bitcoin will never be mined!
Ofc there will be a time when the last bitcoin has been mined, from that day on only transactions fees will be the reward for mining.