The ability to easily solve problems Go was made to solve (mainly, server programs and OS utilities). Those problems are, often, inherently easier to express wi

The ability to easily solve problems Go was made to solve (mainly, server programs and OS utilities). Those problems are, often, inherently easier to express with an imperative style (because they deal a lot with the external, imperative world and all its nasty aspects). You might also loose the ability to know how much memory and time a given task requires at most, which can be a problem when dealing with servers (it's much harder to know how many requests you will be able to serve per second or how long a given request will take to be treated, for instance).