Ive become Mr Smith

Smith isn't the real name but here's the story
I moved into my house in spring of 1976 we just turned 24 and had a three month old. We were the youngest family on the street. Mr Smith lived across the street with his wife of over 50 years, he was a retired stationary engineer
A guy who could fix almost anything, always had some contraption he was making or fixing, maintained his own car.....I was told he re shingled his roof at 70 which is my age now
I would say he was in his later seventies when we moved into our home.....He fast became my favorite neighbor and I spent a lot of time hanging out with him or giving him a hand
When it snowed the minute it stopped I had to be out shoveling or he'd beat me to it. When my wife was pregnant with my son and I was working the midnight shift, my wife told me he did our walk
When my son was about 2 he really liked Mr Smith, often calling his name.
Of course I knew Mr Smiths first name but back than we always addressed older neighbors as Mr and Mrs, something thats lost today but thats another story
Mrs Smith passed away and Mr Smith lived alone for some more years, as he hit his nineties he sold his house and moved in with his son up in New England, he passed away a few years after that
Last spring a nice young couple their early thirties moved next door to me. They have a little boy who turned two over the summer. My new neighbors are wonderful, the little boy knows my name and always calls for me when I see him outside with his father.......Yesterday they became proud parents to another baby boy......
46 years later im still living in on this street, all the old people who lived around me are long gone, nice young couples with young children moved in.....Did that time ever fly by
I sat in my kitchen today across from my wife and said we were the Mr and Mrs Smith now and she told me I surely was, she was right