Probably there are some pilots able to fly with 70 or more.
But ask any airline instructor what they think about it...you'll see that they notice a very big breakdown in perfomance when we approach 60 years old. It's life, we get old, our brain and body doesnt give the same feedback it used to give when we were 20 years old. If I at 29 already feel it, I can only imagine at 60.
If the age is going to be 70, I dare the doctors to pass your medicals according to what is in the law. And the check captains to do the same as well. Because unfortunately the respect the old captains get(well desirved in my opinion), makes that doctors and check captains approve them just because they are close to retirenent age, closing the eyes to same medical problems or not so good sim checks.
Lets not get ourselves killed and lets live a good life, with time to enjoy our family or some other things we never had the time to do when we retire.