> ...charm?

I say Go. It works nicely with old school tooling (editor, tags, grep) and a command line. That's a charm for me.

Advanced tooling is available. You can take 1 step further with LSP integration. Or 2 steps further with a Jetbrains IDE. But you are not forced down the path of advanced tooling just to get by like you are with Java/C#.

> Can you bet on something for the future?

I say Go. The future may be parallel processing. Goroutines are easy way to harness that power and don't "pollute" other code around them like async C# does.