Just to add to that, you would also find that the advice given on this forum is invariably that the crate is training tool, not a way of life. You seem to imagine that dogs are crated all day from the day they come home at 8 weeks until they're geriatric. Not true at all.
It is not a great idea to leave a young puppy home alone and loose in the house. One would either crate the puppy (providing adequate potty/play/food breaks can be given) or else gate the pup in a room such as the kitchen.
but as the puppy becomes housetrained and is learning basic rules such as what it may chew on and what it can't, then the dog should be given short periods of freedom home alone. Those need to be short periods, because dogs need to be trained to be loose in the house and not to chew up your couch.
Depending on the individual dog, most are able to be crate-free by a year or two old. In my guy's case, it was six months. And he'd been trained to be loose starting with very short periods from about 4 months (like minutes), and gradually increasing those periods of time.
I do agree that the vast majority of dogs can, and *should* be trained to be loose in the house during the day. I do not, however, agree that the way to do that is to leave them for extended periods and hope that one day they'll decide that chewing up the couch is no longer fun (I have never, incidentally, lost a couch to a dog. The worst thing I've lost was some junk mail - and that was about a month ago with a dog who hasn't seen a crate in 2 years LOL). Until the dog can be trusted loose in the house, it should be crated. It's just that the training toward being crate-free should also start at a young age.