Life is very unfair my friend.<quoted text>
The slaves have a choice? The baby born with AIDS and who is starving somewhere in Africa has a choice? Cripes, he doesn't even have the opportunity to knock at heaven's gate, he's not baptised. But, it's his fault, surely, as he/she "had a choice", as the slave did.
Of course children are innocent and sickness and disease can strike anyone at anytime.
You are mixing Apples and Oranges.