If you take a microscope to moon rocks, they have a bunch of micro craters. Space is lit, you have super small debris flying around smashing into everything.
Crazy thing is all of this space debris is increasing all the time. So we have all this junk up there swinging around our earth.
Exactly, and nobody wants to pay to clean it up. Maybe we'll have our own rings some day. ;)
It makes you wonder though. If we're so keen on space travel for exploration and tourism, it is in the companies' and gov's interest to make it as safe as possible.