I agree with you. Let him do what he wants. My beloved Snowman was dx with ostio. He LOVED to run after his ball. I could have not let him and had him longer BUT I threw the ball till one day he tripped & caused hairline fractures in his leg. After that it just swelled and it was just days before it was too painful & he no longer did the 3 things on my list (like Judy's for jilly
I knew it was time to let him go. Good luck. But I think it is ALWAYS good to be prepaired