This short video gives one perspective.
Personally I like the feeling of going somewhere abandoned, and it certainly takes me back to being a kid in London, growing up with all kinds of places and facilities that had fallen out of use and could be used as playgrounds (providing one did not get caught). I've done a little urbex work over the last year, as can be seen on my flickr pages.
*Urban exploration, if that's not obvious.
Link to flickr album: https://www.flickr.com/photos/143909484@N04/albums/72157679468784383