I don't think it's particularly fair to judge someones capabilities of raising a dog based on the fact that they are retired. I'll say this, my grandma is 70 is still plays tennis in a league, runs/jogs/hikes/walks daily, completed the multi-day hike up Mt. Machu Picchu in Peru... the list goes on. She is one of the most active people I know and she is retired meaning she would have all the time in the world to do these activities with a dog, if she chose to (Actually, she frequently took my Uncle's dog with her, but the dog has been succumbing to old age and cannot keep up with my Grandma anymore). I just think it's ageist to start judging people solely based on their age group.