I never leave my dogs for more than 4 hours, I think 4 hours is the max... I know for a fact that in Europe the crate is more or less unheard of, I can't imagine shutting my dog in a box for hours at a time, they have free run of the house when I am not here, and normally they take themselves off to my bed for a snooze..
When I first got Gus he had severe seperation anxieties and would tear up anything and everything, but we worked on it, I left him for 5 mins, then 10 mins, then 30 mins, then an hour and when he was secure in the knowlege that I was coming back all the distruction stopped.
My dogs are my children, If you were to hear of someone locking a child in a crate for 8 hours a day you would call the authorities!!
I am lucky that my dogs are allowed to come to work with me, but also I chose my job specifically so that my dogs would not be left.
My dogs sleep in bed with me, and in fact are next to me right now... They need that stimulation otherwise how on earth will they every learn what is acceptable behaviour?!