Go has two things going for it, it was created by legends, so it gained a lot of interest from the beginning, and it has an excellent and unique runtime, making it really ideal for network services that constantly wait for something, yet still being able to do CPU intensive work. The language itself is just "OK" and that's kind of the point of it.

I think being able to just create cross platform binaries + having good tooling out of the box as well. You can get started with go very easily and sharing programs as binaries just removes a whole lot of issues you'd have in other languages.