I said that that was the very question I asked myself as a child, when my mother tried to force feed me by telling me about the hungry kids in Africa. I knew that whether I ate or not made no difference to them. But why was I "luckier" than them?
If there is any justice in the whole of Creation, then we should all have the same opportunities and we should all stand the same chance. Perhaps it is not down to just this one lifetime.