I completely agree. It is the great development environment that makes windows the OS of choice.
If it wasn't for the .NET platform I would have made the switch to Linux ago.
Microsoft must dare to start talking about the future of .NET including WPF and Silverlight.
Make sure to do as Bojan suggested and raise your voices on Silverlight's official feature-request forum: http://dotnet.uservoice.com/forums/4325-silverlight-feature-suggestions/suggestions/1894125-main-language-for-the-windows-8-development?ref=title