I'm getting annoyed with the first stage trash that's allowed to be dumped at the bottom of the ocean like a bunch of large cigarette butts. Come on, find some way to make these things always recoverable. The more space flight happens, the more trash we'll get.
And this isn't even counting the satellite trash. Everything released into space should be built to return and be burned up in the atmosphere if it can't communicate with a ground station after x months.