I don't care what the others say about this already being done before, this shot is unique in it's own way. The pose of the child, his head leaning down, the whole mood of the photo makes this unique shot. The processing ads to the lonely mood. Well done.
I have no idea how the voters will take this challenge, I'm not voting as I think I'd be marking down images like this for not being truly unique and never before seen on dpc. I like the fact that you shot the boy from the back, it adds to the alone concept. Great dof and overall treatment of the shot. Vignettes are overused imho and often just look like they have been added for no reason, I think it works well here and compliments the shot - nice one!
The mood and emotion are palpable. Patiently waiting. The BW conversion and subsequent tone support the mood. For the most part, I like the composition, I wonder if it were possible to take a step camera right to free up the right chain from the background tree. (BTW, searched the galleries, plenty of children on swings, but this is unique. I'm hopeful your presentation and processing will keep the DNMC police away!) Good luck! 9