question to the faithful

i used to be a christian and now im a agnostic. i lost my faith in god do to mostly the bad things i see happening all around the world.

i have a question to all christians how do you reconcile a belief in a merciful god with the millions of children dying of aids in africa and the innocent people all over the world who suffer and die needlessly? how does a child dying of starvation fit into gods plan? every christian rants against those who support reproduction rights as 'baby killers' why dont you rant and rave against god who allows millions of children to die from hunger and disease daily?