I couldnt live without my doggy door :) They are especially useful with young pups who cant hold their bladder for long! For some reason one of my dogs,not sure who, has to go in the middle of the night,before i got the dog door i woke up to a surprise in front of the back door most mornings
The dogs can go in and out at their leisure,wether i'm home or not,there is no need for them to scratch at the door every time they want to go outside,alot less hassle for all of us :)
If insurance is an issue,you can buy lockable dog doors for when you have to leave the house. I have never locked my dogs outside when i need to go out,with the dog door they can choose where they want to be,always inside!
IMO dog doors are indespensable.
Rose