I don't ignore the alternatives, but I certainly don't have the time to dive into every language of the month so that I can add them to my tool belt "just in case".
And, of course, even if I had them in my tool belt, I don't know too many companies that will pay what I'm making as a .NET developer to work in a language I've picked up on the side.
If there's another way, I'd love to hear about it.