Peter Ring's retirement plans

I'm born in April 1940, which means I should really be a pensioner. Consequently I feel it's a good idea to tell about my retirement thoughts and plan.

The plan is clear and simple:

I stopped partly taking in new customers in when I became 67 in April 2007. Thereafter it must be an interesting job if I'm to take in a new client - but it has happened several times.

I will continue serving my old clients as long as my clients are still interested.

Why, and is this realistic?

I have got a good health, my weight is in the "normal range", and I'm an active sportsman on a "just for fun" level, especially tennis. I'm also playing bridge.

From a genetic viewpoint it looks good:

Three of my four grandparents died of age in their late 70's. All of them were mentally in good shape to the end.
My father (born 1911) died of age in January 2002, almost 91 years old, mentally clear to the end. He retired when he became 70, and he wrote his last scientific paper (about the physics of ball lightning) when he was more than 80 years old.
My mother (born 1915) died of age in march 2012 (96 years old), mentally fresh almost to the end.

What can go wrong?

Unexpected disease. A possibility for everybody, but my risk is below normal, see above.

Disaster/injury, for example a car accident. Can happen for everybody, but my risk is below normal because I'm physically fit.

I win 10 millioner Danish kroner (1.4 mill. Euro) in Lotto. Not very likely, especially because I'm only very rarely playing Lotto! But even if I won I will continue serving my old clients anyway!