Every night, just before bed, he’d thank his bride of 70 years for giving him another wonderful day on Earth. That was the sweet-hearted nature of Jack Krieger, my family’s next-door neighbor for more than 30 years. I first met him as a very young boy, shortly after my growing family moved to our brand new suburban house in 1964. As I grew up, I knew him as the dad of five children, a good neig…