For me, Go's big win is that I can finally bring this, the right way to do it, to work, because it's the first time this paradigm is present in a conventional imperative language, not that it is the first in general. Many other languages got it right in theory before Go, but there was always some practical stopper, involving some obscure programming paradigm that I stood no chance of getting buy-in on (from engineering or management) or an ecosystem that simply couldn't be reasonably be called production-ready across the set of tasks I needed to accomplish. Go finally gave me almost everything I wanted for work. If it isn't everything, well, that's life sometimes, you know?
