Network latencies and round trips will almost certainly be the primary source of performance issues in any larger microservice environment. If you don’t need that level of scale, that’s great. But once you do, JWTs are perfect for carrying information across the network that may be verified without extra network calls involved.
A vanishingly small minority of projects need the ability to instantly revoke a token on every HTTP request. And even then there is nothing stopping you from doing so with JWT.
