Have to say your experiences mirror mine. I would love to use Go. I come from the embedded world, so "C" like syntax is more natural to me. But the lack of decent dataframes in Go is a killer. And there is the whole matrix vs lists thing in Go. I ended up writing my trading program in python, not cause I like python, I don't but it was the right tool to do.

The zillion python help sites is another reason, someone somewhere has written a tutorial on how to do everything in python. The Go space is less well paved over.