I have to agree strongly with Amy J; it is terribly confusing for some parents. When I became a mother, I had been working with youngsters for over 15 years and I still found of some of the newer books in radical conflict with each other-- and you have each author saying "my way is the best, mine is the foolproof method for raising children who grow into decent adults". Some of them even have great *theory*, but no concrete directions/advice for parents to access, leaving them in greater conflict with themselves because they don't want to shortchange their children*.(I've added an example at the end of this post.)
What I come across, often, is parents who have not dealt with their own fears-- fear that the child won't love them, won't be their friend, fear that discipline will make the child angry with them-just as that mother or father might have been with their own parents, etc. Parents who have not become determined as to what is 'right' in their own minds often find that their children are very good at mastering the situation. Perhaps this is due to conflict with their spouse or their own parents in how they parent, perhaps this is due to a need for support within their community. Of course, there are some parents who really, simply couldn't be bothered, too. But often, that parent whose child is sassing back and interrupting all the time is being ruled by their fear. ("If I put them in time out, aren't I denying their sense of person-hood by not allowing them to talk with us?") Or as before, they are so paralyzed by the poor parenting they received, they simply have nothing to go on because discipline and even a basic authoritarian style can feel very uncomfortable to them.
You are right, we do well to give our children routines, consistent boundaries, structured and predictable discipline, and plenty of love and affection to boot. Rest is a huge factor in how everyone in the family relates to each other, and many families do find differing models to accommodate that which really do work for them.
Maybe you'd care to enlighten us with why you are so fed up?.... I personally think that there needs to be more support for the job of parenting than making a high-school student carry an egg around for a week, which is what they did when I was that age. I think all high school kids need parenting classes for a semester, just as they need personal finance classes or home economics to learn how to take basic care of themselves when out of the family nest-- they need help to learn how to parent, too. There's some weird magical thinking which suggests that babies come out and --voila!-- we now have all the knowledge we need. Birthing is basic biology, not education, and while we might have a bit of instinct into how we tend to our new baby, the more we take the time to learn, the better we do. Education doesn't need to be from a book, it can be from observing mothers we admire and asking questions. It can be through simply having a basic understanding of child development from a biological standpoint, so we know what sort of things are going on for their age. It doesn't have to be about following one parenting guru or another, it's about taking the best bits and leaving the rest. And if we can get away from "style" parenting (strictly following one philosophy) and move toward common sense, the so-much-better we do.
I apologize for the length of this; parenting and child development are my passions and I have spent a lot of time really turning these ideas over in my head over a number of years. Being a mom only proved to me firsthand how hard the job was.
*I'll site Alfie Kohn's "Unconditional Parenting" as an example-- he has great arguments about why his philosophies would work to raise self-regulating kids over the long haul, yet he offers very little guidance for the new parent, who is likely to feel a bit lost, to overtalk with their children, and the parent will be constantly worried by Kohn's assertions that NOT using his methods/thinking will be a long-term disservice to the child. I love Kohn's writings regarding education and incentives, but this book on parenting threw a lot of parents for a loop.