I love the way you told your story and peppered it liberally with photos. So glad you had an opportunity to see this place.
I have been there twice. Though the setting itself is magical, I found that the experience was cheapened by the wall-to-wall insecapable knick-knack shops, all selling the same cheap garbage to the hordes of tourists that descend on Le Mont Saint-Michel every day.
I hope that your visit served as a wonderful start for your retirement and that you have lots more travel and travel writing in your future. Please continue to share it with us!