I think there is too much "rose tinted spectacles" here.
If you look at pictures of Birmingham for the 30s and 40s many of the buildings are filthy.
The Bull Ring and New St station of the 1970s were pretty awful.
I took many pictures of the area round Gas St basin and Broad St in the mid 1980s and it was terrible. Dirty canals, empty factories, cars and bikes dumped in the canals. I used to walk round the canals on a Sunday taking pictures in the 1980s and not see a person all day.
I know we have lost some fine buildings, but much of Birmingham is far better than it was in the past decades.
I suggest some of you go up to the area round Broad St today - the Convention Centre, the NIA, Brindley Place, the Mailbox, the Cube, the canals in that area.
Go up there on a sunny weekend and you will see hundreds of people walking around, people sitting outside in bars and restaurants, many tourists and visitors, and people taking photographs.
Or you can just sit at home and moan about how things are today.
Look at this lovely picture from the area at the back of the Convention Centre and remember how the canals there used to be (click on link).
https://1.bp.blogspot.com/_Pgn7OIs5wK8/TMmw440Kz9I/AAAAAAAACO8/VhD2QbGQWEc/s1600/IMG_4412.JPG
Here is how the area used to look (I took this in the early 1980s)
Here is the same view today
.