Well, I did because I no longer had a need to do so. I had life tenancy so could have stayed but I could afford to pay market rate so I freed up a property for someone who was on a low income - that's how housing associations work
It's totally bonkers policy.
I lived in a housing association place for some years. I got on the list as a student, lived there while I was on a starter salary and as soon as I got some decent wedge, I moved out, freeing it up for someone else. A year later, I had enough in the bank to my own...