Strange as it seems now many people who grew up with the Loo out the back felt that was the best place for them and having one inside was unhygienic, of course many were once only a bucket rather than a flush toilet so keeping a smelly bucket of waste out of the house was probably the better option . I was surprised to find that when I moved to Hampshire in the early 1970’s to see an advert by Winchester Council a City that is generally considered to be quite affluent for a night soil collector. They still had some properties where the toilets were still the bucket type and the waste was collected every morning.
GH