I'm with the OP on this, I've experience with Java, C#, Python & C++.

I'm a big fan of rapid prototyping with Python to map out problem domains, and once the domain has been mapped properly, rewriting in a statically typed language if necessary.

Python is much better for prototyping than the other langs I've used. Because the syntax is almost pseudocode, and the duck-typing makes a lot of design patterns and boilerplate obsolete, so I can dedicate my headspace to the problem at hand.

Right tool for the right job, as they say.

True enough. I've dabbled in several. These are just the two I happen to have the most experience in and the ones that seemed relevant to my point.