ZK tries to cut down on busywork and pure contests of APM. If you don't want to micro then you can do things like tell your units to fight somewhat intelligently (eg long ranged units run from approaching enemies) and set them to retreat when their health is low. It doesn't replace quick tactical decision making for more intense 1v1s, but not everyone wants to play that way anyway.
ZK tries to cut down on busywork and pure contests of APM. If you don't want to micro then you can do things like tell your units to fight somewhat intelligently (eg long ranged units run from approaching enemies) and set them to retreat when their health is low. It doesn't replace quick tactical decision making for more intense 1v1s, but not everyone wants to play that way anyway.