Personally, I prefer thinking of programs being created - I seem to work so much more productively that way ;)
Fun aside, I think mathematics is neither completely human-created nor -discovered. It's a mixture of the two. Now, if Hilbert had been right and we could deduct everything from a created set of axioms, I'd say we created the axioms and discovered the rest.
Unfortunately, Hilbert was wrong and on the grand scale of things, to me, mathematics is a steaming pile of dung if you consider that perfectly logical things contradict themselves. Thus, mathematics must have been created by humans.