The Great Feeder Conundrum

Why are bird feeders okay but not bear feeders? I get it, leaving dumpsters of trash out for the bears destroys their instincts for hunting and gathering. But why is it okay it birds are dependent on us but everyone freaks out if a black bear tries to break down their front door because it's grown accustom to the taste of Frank's Kraut? It's not like they the bears can make their own Kraut. They don't have thumbs.