Thanking a God for something you have (or don't have, in this case) is a very selfish gesture.
I don't see why a God should save "you" but not 600,000 other people (so far).
On the other hand I don't understand why a God allows "you" and others to be born healthy but many other people (children) are born with handicaps.
I don't know why he created handicaps (random, not for everyone), diseases, old age and death. He evidently enjoys himself in this way.