A work mate of mine experienced the same a couple about a year back at dog trust over here.
Because he and the live in girlfriend both worked they wouldn’t give him a dog. He was an experienced dog owner having had a Lab always growing up and he lived in the country with loads of space outdoors and could house a permanent kennel.
He was a real dog lover and he and his father had always had gun dogs.
He would have given a dog a great home but rules are rules I suppose.
Seen it many times, young families with small kids mithering for a dog or puppy. Have a fenced in yard, someone maybe home all day but with no experience or patience to train it are taking it back within months when its chewed the kids toys or keeps pissing on the floor.
Experience with dogs far outweighs having the exact set up and this for me is were a lot of homes/trusts let rules get in the way of dogs being re-homed.