Finally, I have the chance to go through your gallery (I've been meaning to do so for a while now). I love this photograph, Daniel. It does not only convey an apocalyptic feeling, but also one of desolation. Technology driving children away from playgrounds and forests, keeping them in their houses... It's an overwhelming sadness, really, and this photo seems to convey this well.
Personally, I feel that this is an excellent photo. It is also a wonderful metaphor. As for the centering, oddly, it is the one thing that is often in sharpest focus in many people's minds, so I am glad you placed it where it is. Details of one's childhood often become hazy as time changes things and age sets in. The playground equipment in the foreground is what most would remember, but not so much peripheral details which do sometimes fade into the darkness of the mind. Well done!