Jack,
There are no old bold pilots.
That is the realm of young, dumb and too full of ego, they think they can do anything.
I expect given you are nearly seventy , you would have learned through the years , you do not know everything, can not do anything just with a gung ho attitude and physics does not give a shit about what you think.
The are reasons for having proper training and evaluation of your abilities. Do not let your ego write checks your skills cannot pay.
The only thing more dangerous than a young fool is a old fool.