[goatlover]

Because languages like Lisp, Smalltalk, Ruby give you greater control over bending the language to more closely match the problem domain, instead of jumping through extra hoops to express what's needed, and the result is a more readable program, because it's expressed in terms of what the program's trying to accomplish.

The entire history of computing is abstraction away from the machine, and offloading as much of the work to the machine, so that humans can focus on solving problems instead of worrying about lower level details. Dynamic languages tend to be better at that.

Now if you Haskell is the comparison, then maybe not. But Haskell has an advanced type system with excellent composability, so it's quite capable of expressing high level abstractions and domain specific code.

That's the general idea, but clearly not everyone agrees. Or perhaps, other concerns are considered more important.