The more experience I gain as professional software developer, the more I begin to appreciate that what matters is the entire "ecosystem," rather than what language I'm programming in.

What's the IDE like? How are dependencies managed? Is there a solid framework, as opposed to "move fast and break things" frameworks or "scores of amateurish third-party add-ons to choose from" to solve everyday problems? What's the programming community like? What kind of companies use these solutions, and what's the culture like there?

Tools a big part of what we do. If I were a mechanic, I would rather work on Hondas with a good set of tools than I would Ferraris with tools bought at WalMart.

Personally, I've done only a tiny amount of C# development. I'd have no problem going back to that.