In all honesty, indenting with more than 2 spaces (or, gasp, with tabs) is enough to kill a language for me these days. There are so many competing "new age systems languages" as I call them (crystal/rust/go/nim/d/julia/etc) that you really can pick the one that suits you the most. Crystal is more my speed. Yes go is way more mature, and has all the features I want, but it just isn't set up how I want things to be set up, whereas Crystal is. Is Crystal perfect? No, but it's the closest thing to what I want, and has all the appearances, trappings, etc., that I would expect of a language sent by the gods. The way go code looks just doesn't do that for me, but I'm sure it does for the people who created it.