I use UUCP at work, to talk to a very very old, but very VERY important legacy system.

It's just one of those things that anything that has lived long enough to force you to use something so old, tends to be very important.

On the plus side, UUCP does have a couple of things going for it.

- Nobody targets exploits at it

- So well polished that the code is utterly bulletproof. It simply NEVER breaks.