Leaving your gear up on a route is simply selfish and should be viewed as booty. I thought that it was bad enough when someone left draws up on Flesh For Lulu(they were working the route) at Rumney overnight and they were shocked to find them gone the next day when the returned to claim "their" route. Expecting to leave gear on a trad climb at a popular public area such as the Gunks and find it still there when you return is simply silly. This is with the caveat that there was not an injury.