It's not like people who work at Facebook have to use PHP anyway - there are quite a few who work in "superior" languages, although most just use C++, Java, and

It's not like people who work at Facebook have to use PHP anyway - there are quite a few who work in "superior" languages, although most just use C++, Java, and Python. In my experience, the top-tier developers enjoy challenges and solving problems, and languages are just tools they use to defeat those challenges and solve those problems. Sometimes it's a language they really enjoy using. Sometimes it's a situation where that language isn't a suitable one.