Who cares if information is preserved in a black hole? What purpose does it serve? What can it teach us about the universe? I'd actually like to know the answers to these questions.
But... Hawking is undoubtedly a brilliant mind. Why has he been wasting his time for years trying to decide whether or not "information is preserved in a black hole"?
I'm admitting my ignorance here... Someone please explain to me what the relevance of this is...
The problem is that we don't know what we don't know yet. This discovery will act as a stepping stone for other discoveries that we can't predict; some directly useful in every day life, others not so much. Scientific advancement is all build on the shoulders of those who came before; this discovery lifts us a little bit higher, ready to catch whatever comes next.