Dottie, as I already said, when we got our pup at 9 weeks we lived in an open plan house. There was no way we could make it totally safe for him - tv wires, internet wires, stereo wires etc. He was only locked in his crate overnight and even then not the whole night as we would get up a couple of times to see if he was ok or needed to pee or poo.
He was not left alone during the days. I was normally with him or, if I had to go out, one of our nieces or a neighbour came in to be with him. So hardly cruel owners are we?
Now he can sleep where he chooses and, most of the time, he chooses his bed. I do know that if he is not well he always goes in his bed and if he is worried at all he goes in his bed. He is not happy when fireworks are going off and will always go in his bed then. He is fine in there but otherwise he will cry.
He is not keen on any loud noise or anything strange to him (we moved the living room furniture round the other day and he went straight into his bed as he was obviously not happy about it).
I get that not everyone thinks crates are a good idea. I had never used them with all our other dogs (over 10) and only got one for this dog because of not being able to make the house safe. I would definitely use them for any future dogs though.
Quite a lot of dog trainers and behaviourists recommend crate training because if, for any reason, a dog has to go in a crate such as at the vet or if injured etc, they will be used to one.
A friend's dog broke his toe and the vet told her that he had to rest. Of course he wouldn't rest so the vet recommended a crate. Because he wasn't crate trained he wouldn't stay in it and just flung himself around and howled. He had to have his toe amputated because he did not rest and it didn't heal properly