brouhaha go bad. Why are you writing an add function when 1 + 1 will do?
I mean I know there's better examples out there, but in practice I've not missed a lack of generics in Go yet. Mind you, I'm not writing libraries for e.g. json parsing.
Actually there is one place in my application where I use interface{}, it's a bit of code that converts values to XML strings, but it needs different logic for different types. I don't think generics will solve that: https://go.dev/play/p/TtwyNZ7oOPx