Too many details to explain, but it comes to this:
* Far less worrying about memory leaks since that is automated.
* Security is integrated in every class, method, property, which gives
virusses a hard time to misuse the code.
* All .NET programming languages C# VB C++... have one set of class library.
* Mixing C# dll's (assemblies) with C++ and VB is stupidly simple.

I use C# and C++ 2003 together to create one program.
C# for fast compiles and none time critical stuff, C++ for unmanaged code
for time critical stuff.

In my opinion it is worthwhile to set the step. But the learning curve for
the integrated security is pretty steep unless you are a professional IT.
;-)