Because you were a total fuckin dick about it. Duh.
We know there are dogs totally deserving of adoption out there right now. Obvious fact is obvious. That doesn't mean however, that our sole option is to play cleanup for douchebags who are/were shitty dog owners and roll the dice. Maybe you should focus your rage and disdain towards them and not responsible future dog owners, eh?
I don't mean to argue with you on the merits of adoptions, as I agree wtih you- but that doesn't mean you have a right to just rip on somebody for wanting a specific kind of dog to fit his lifestyle. Do'nt be a dick man, there's no reason for that.