I would say it is never too late to make a change that will improve your quality of life. My wife and I are in our middle 50s but blessed to have made the right decisions throughout our careers that allow us to enjoy TV at an earlier stage in our life. I have played golf with some guys in their middle to late 80s and they are still enjoying life, even when they triple bogey! Another senior lives at Freedom Point (Assisted Living) but still plays golf 3 times a week.
I have heard several times that the Villagers live longer then the average senior up north. I believe it. Do yourself a favor and make the move to TV. It will be one of the best things you do in your senior years.