Why does everybody assume that we're closed on applications!?

Lugia, go state 'ALWAYS ACCEPTING' in your OP.

Anyway... that depends. Mostly, it's kinda brushed off as 'useless' junk from an ancient race that came before Arceus did. Ruins are pretty rare, since the world had to be rebuilt over the process of millions of years (condensed into a 1000).

Artifacts are more common, but they're not really as easy to find. Not only that, but we still haven't pinned a plot to them yet. As seen in one's post, they generate some interest, but overall nobody really cares.