I think it was selfish, whilst I have no qualms with a one leg amputee, surely two legs on the same side is only going to leader to further problems (i.e. his back is completely curved in those photo's to keep him balanced), however saying that - if he's coping short term then fine, I just see an owner that would put an animal through that not being able to see that it has to be right for the cat and not themselves.