Re: VBScript itself is a problem
Err, 'C' is about twice that (started in 1972, K&R published in 1978), and it's *everywhere*. Fortran is just less than three times as old - first published in 1957 (although less popular than it once was).
Age is not a good reason to get rid a language, in fact it's a reason to keep it - we've probably got rid of most of the nasties from the compiler/interpreter, and we know where the dragons live when writing it.