I think my obsession with derelict buildings is the same as my need to collect things, and my fascination with second-hand belongings. The imprint of a past function that has gone. You can only sense it, and only when you want to. Intuition, implication, insinuation. Subtlety.
There's a morbid fascination as well. Of course there is. I think there usually is when you're interested in the past. Organic found objects share the same story, because they were not made for me- I did not buy them or choose them. Pieces of dead animal, other people's belongings... It's all connected. I'm not that clear by what yet though.