A little thought about Degradation

Hello! Today I'm here just to express a little thought about feelings that spaces provoque in ourselves. I recently had to photograph a public space in Porto (Mercado do Bulhão); and I know that he degradation of public spaces is not a new subject at all; However I really enjoyed it. There's a sense of nostalgia about that. Why do I think that empty spaces have so much to say about ourselves? Why do we relate with it? Any ideas?