I think micro services are useful if you need to scale your application parts independently from other parts.
But I think now everyone uses micro services because it fulfills the developer dreams of being able to write code independently, and have it run on your computer inside docker.
So using docker is probably the best part about micro services. The downside of all this is the extra complexity in having them talk to eachother and that is the difficult part. When everything goes over the network and is async, you run into lots of potential error scenarios that must be handled. And each call is a million times slower compared to local.
It's not the future. It's just a tech trend and it will be something else in a few years. Tech never stays the same for very long.