Thanks for the anecdote about your grandfather, Raoul.
It only adds to the perspective of the astonishing technological changes,
especially about space travel, that have occurred in the life times of the elderly.
There are people alive today who were born before 1900, before the Wright Brothers flew, who have lived long enough to see the enormous [and growing] ISS space station cross the skies regularly.

Raoul? You know how impatient North Americans can be [I'm no exception I confess at times]...You read about the
complaints made on habitablezone.com
by those who are impatient that space projects get canceled, or delayed or fail at launch.
Most of the impatient complainers here on this website are probably young [under 30],
not realizing that they can live another
70 or more years [thanks to medical technology].
So, those 30-something "zoners" who log-in here may live to 100 years of age or more [year 2070 plus?].
What space achievements will they witness by 2070?

Jacob