And yet in this wonderful laboratory of a multitude of languages the growth of a language doesn't destroy as much as it offers a larger variety of choice - with good features being stolen by other languages and less good features remaining niche and unique.

Look at C++ or Perl, languages with many features that are quite frequently hated. When you add features, you force users to learn those features. It is not just a "variety of choice" because you know that other people will also take some of those choices and you'll probably have to edit their code at some point. Features are not just added to the language, but imposed on its users. The need to add features to a language is a sign that what you already have is insufficient. Features should be added to the bottom of a language, increasing its expressive power, rather than to the top of the language forming cruft around the edges. It would be much more productive for us to collectively abandon PHP in favour of sane languages, ones which don't require the continual addition of more features to cover their foundational shortcomings.

The imposed part was funny. I hope I wont have to use anything new. I only had a mild panic attack reading they changed exit() but it was a false alarm.

Why is it that after the human life span expires all of the code should be thrown away?

I remember when my host updated and php could no longer be opened with <? and my websites spilled their guts all over the screen.