The Mystery of Death's Timing

I will always wonder why God allows babies to die when they haven't even lived outside the womb? What possible purpose is there?How could their purpose be fulfilled before they lived outside the womb?

What was Williams purpose? What is mine?I know that so many of my questions will not get answered on this earth but I still need to ask them.How could I love someone so much that I never knew alive outside of my stomach? I truly love William so much!