I am new to this group. I have not answered any of the questions until now. But I have to say my piece about the crate issue.
I have had many dogs over the years. I have used different methods to keep my dogs when I was not home. My Lab TY was left in my bedroom when I left. He chewed a hole in my door to get out! After several attempts to fine the right thing to do with him I was forced to crate him. What a difference! He settled down and we became better friends. I wasn't angry at him when I got home for what he had destroyed.
As to the crate,He loves it. I leave it open when I am home often he goes to it on his own. I have to call him to go for a walk.
So I say crate's are great!