Little dog is 2 now. She never uses her crate of her own accord - she has a bed in the living room which she prefers. I thought she might use it as a refuge from the DC but she has never ever gone in there without being asked. She does happily go to her crate at night - it's more a habit than anything else now.
I'm confident she won't chew furniture or get up to mischief and of course she is toilet trained, and we'd like to use the space under the stairs for wellies 
So - what do we do? Just stop using it? I can picture her wee confused face the first time we go to bed and leave her in the living room - if she wakes up that is...