You seem very focused on what you can't do with it rather than focusing on what you can do with it. I've found, in practice, that you learn to adapt to not having that level of expressiveness and start thinking through problems the Go way. And I've come around to the viewpoint that expressiveness is also a liability of a language in addition to being a feature. Sharing code in a team becomes so much easier when using Go compared to other, more expressive, languages. And I've even come around to liking it for my personal projects too after returning to code I hadn't seen in months and immediately grokking it.

Maybe it's just my advancing age (for a programmer), but I find myself gravitating towards the "It's not finished when there's nothing left to add, but when there's nothing left to remove" mentality when it comes to programming languages. I find that I'm only willing to tolerate new language features when they introduce benefits that go beyond expressiveness.