[path411]

I've used php extensively in the past decade. You could kinda of say your argument about any modern web language. If I'm already comfortable in php, .net, node, ruby, or heck even java, for making a web app, do I really "need" to learn another? Not really. Every one has a different way of doing things, sure, not every different thing is better, but it is different. I think just people like to learn about multiple, but sure, you can always be stubborn and stick with your single hammer.

The two things I can think of quickly, that I like about php, over another, is the ease of code->browser. You have to manage 0 build configurations or pipelines to get what you want working. Just download the files and open a browser. The second, is 100% transparency with third party libraries. Because of the lack of ability to compile, when I download a third party library, I'm getting their actual true source, and can much easier, navigate and understand the library right through the ide, without having to read a bunch of docs online and that it's true to source. Being able to control click into third party libraries is quite liberating.