I've used C# since 1.2 (not exclusively).

The language is really good - it's one of my favourites. It's almost 2 decades old, but it's evolved naturally and is still a modern language.

Unfortunately, it's the shit around it that let it down... MSBuild, NuGet, VS - they're full featured, but very slow and clunky and hard to work with. Only popular because there's been no viable alternative.

Now, with dotnet core, there's no more reliance on Windows (for both dev and production). I can develop and deploy on my preferred OS, and there's a choice of IDE (Rider and VS Code).