I know its not perfect, and has some little loved features. But for me a language is a tool. And tools are meant for specific jobs. Like I wouldn't use a phillips head screwdriver where a set of pliers is needed.

If php is to advance we should welcome all tools that evolve it.

Or ditch it already and write Python/Ruby.

Why don't we ditch Python/Ruby and just go with CLISP?

Because Python/Ruby are decent languages, CLISP isn't objectively better, it's just different.