I was concerned by this at first as well, but after using Go full time for the past two years, I've never found a need/use for them. Go doesn't lean towards strict OO principles, where I feel that most of the Generics uses are applied (Arrays, sorting, etc.).
Not everyone's opinion, just my two cents.
That's fine if you only use those, but it makes it impossible to write generic functions for much else. See my comment about lack of libraries. I did miss them a lot.
Not when writing your one off app or program, but for libraries.
And you end up having to implement a lot yourself that's for free in other languages.
Doesn't a channel/channel-select fulfill this requirement?
EDIT: the answer seems to be downvote. Okay.