I write Go all the time. The number of times I've said "I wish I had generics" is 0. It's absurd how goddamn often this gets said ON EVERY GO THREAD EVER.
There is absolutely 0 chance in the time you've written go that you haven't encountered a problem that would be best solved by generics. Chances are you're just implementing them in a different way. I say this as someone who uses Go.