Right. I have read the thread now. I do agree with LeQueen and others of similar mind. 
Our happy children live in a clean and tidy house. That is not a contradiction.
I would be incredibly stressed living in a dirty untidy house. It is not hard to achieve such a state of order and our children enjoy that order.
The key is to have a few rules. It really is so easy once you have a system.
Our children eat in the kitchen and on special occassions in the dining room. They do not eat anywhere else. CattleProd we do not tolerate chocolate anywhere but at the table.
Shoes off at the door and stored under the stairs.
Children completely banned from designated rooms except when accompanied by an adult. Tidy their own play and work rooms once a week. Biro and other pens not allowed outside work room.
Tidy the kitchen and completely clear all surfaces before we go to bed.
I clean all rooms thoroughly once a week. Ironing must be completley cleared and empty all washing bins every 3 days.
Tidy up and file away papers as we go along.