The people who lived in them were people like us, in my own case my parents and grandparents. My grandmother was born on a barge in Tipton Basin, but she became a domestic servant. Eventually she moved to leafy Edgbaston and as servants do, lived in shared accommodation in the attic.
She married the gardener who taught her to read and write. As a couple they could not live in, so they lived in Parker Street and walked to work each day. Eventually they were able to move to Reservoir Terrace off Osler Street Ladywood. This was an improvement as there was a small garden and they could enjoy the views of Rotten Park Reservoir. They lost two children, then raised my mother and her sister who attended school.
My Aunt moved to the countryside on marriage. My mom kept house for her invalid mother. Mom lived with Dad there until after the war he was able to take out a mortgage and move to Bearwood. And so I was born.
I am proud to say these are my people. Some of the houses were eventually 'little palaces'. There was a tremendous community spirit among the old neighbours I met. It is important to recognise that my Grandmother did 'better herself' from living on a barge (the canals were in recession then). They were able to attend Birmingham Botanical Gardens often. I've lived in a two up and two down house with one cold tap and no inside toilet, heated by a coal fire in the living room.
It would be easy to respond to your post with anger, but I think you need to show some empathy.