Well… I believe it was James Gosling who said that there are two types of computer languages: “ones people complain about and ones nobody uses”. So if you’re complaining about Brainfuck then it must be a language people use by process of elimination ; )
This presumes that "ones people complain about" and "ones nobody uses" are mutually exclusive - and I'm reasonably sure that Brainfuck is clear evidence against such mutual exclusivity ;)