>>7 You can also always use hash-tables or alists like in the python example. But different varieties of lisp are defined by different properties. Some have the everything in one name-space, some have different namespaces for functions and variables, and I think some add more after that. Some have fexprs, some don't. Some support tail recursion and some don't.
If you would prefer to stick to those dialects that allow dynamic scope, then by all means, do. But I don't see why the rest of us should take your preferences as anything more than that: your preferences. And we all have our preferences.