What are reasons to choose a scripting language over C#?

Question

What are reasons to choose a non DSL scripting language over statically compiled language such as C#?

-edit- Good answers so far. I feel I should explain further. I

Answer 1

Speed of development generally, a script language removes any need to compile anything - just type away and execute it. Generally, you can type away as it runs if you edit it whilst you've stopped it in a debugger - no recompile, no need for 'edit and continue' support, no nothing.

Many script languages also have less restrictive scope for things like static types, you can just code without worrying whether your string needs to be converted to an integer or vice versa, you just use it as-is and it works. It's debatable whether this is a good or a bad thing, but I reckon it's one of those things where it's good when used for some tasks and bad for others.

Add-ons and libraries are also generally much easier to use - you don't need to register or install anything, or worry about assemblies or the GAC or signed stuff, you just include the source files and you're done.

So script is the easiest thing to make work in general, that's why people use it.