Truth is ...

From the lyrics of U.N.I - Ed Sheeran :

But I know god made another one of me to love you better than I ever will

That's the answer - for the loved ones that we have lost, its because God had found some way to give them the love they deserve, someone who can truly love them better than I do! And I shall live with that in peace - knowing that they are in a better place, better taken care of than I can offer.