I'm all for natural consequences. And I think it helps them make better descions. I'm not even a spanker. But seriously, sometimes you need a carrot to dangle to get them interested. I don't care if it is bribery. And sometimes there needs to be a punishment. You don't have to "cane" them, but you should be able to remove a priveledge or something.
My youngest is in preschool, and they have an apple tree in his room. Each child has a paper apple on the tree. They are sent home at the end of the week and if they don't have any "worm holes" then they behaved. If their apples are punched, there's a note on the back telling you why. They do NOT want that hole.
Also, if they are caught being good, they get a "smelly." Why this thrills them so much is beyond me. A smelly is when the teacher puts chapstick on their wrist. They have several flavors and the kids love smelling like they've been good.
Half the time, I don't think parents demand respect.They don't respect each other and the kids don't see it modeled.
There are so many reasons for the behavior of kids now, that it would be hard to hang it on just one thing. How are y'all handling discipline? If there was a big problem with my child, sure I'd want to hear about it so I could fix it. But, if it's something minor, I say fix it when they are there. I bet y'all have to ignore a lot more because you hate to talk to the parents about every little incident. That's got to be maddening! Not doing the kids any favors either.