Sorry for not having been clear.It was a little unclear as to whether you were speaking only for yourself or for everybody your age or older.
My point was that there is nothing wrong when one cannot climb a ladder with a 20 kg tank on his/her shoulders.
It can be due to age, medical conditions, or simply native constitution.
40 years ago it was common to think that diving was a sport requiring perfect fitness and some robust body.
But later it was found that small females or young children can also dive safely, even if they cannot raise the tank from the floor.
It is just matter of adopting proper procedures at beginning and end of the dive.
My point is that proper procedures should be friendly also for very old or very young recreational divers.
Let's leave the requirement of being strong and fit to certain types of tech or military diving, and instead we should set up the procedures for being friendly for everyone.
We are not all equally strong, so we should accomodate for making diving safe and pleasant even for the weak ones.