The niche I think go appeals to is Python/Ruby/NodeJS developers who are intimidated by systems programming (eg: C-style threads, manual garbage collection) but

The niche I think go appeals to is Python/Ruby/NodeJS developers who are intimidated by systems programming (eg: C-style threads, manual garbage collection) but still want to work in a statically typed environment. Goroutines and channels in particular are an interesting and useful abstraction away from threads and communication between those threads.