This is a great point, and I think it's one of the most powerful things about .NET. You can compile most (many) other languages and use it all interchangeably. Build in one language, use in another.
Each language has its pros/cons, and depending on the project you're working on, you can pick which language is best for the task at hand.
Each language has its pros/cons, and depending on the project you're working on, you can pick which language is best for the task at hand.