Honestly, this happens to me every time i smoke.
when I was young i used to laugh, get hungry, sleep.
now its just like your quote. Except there is something about it that still makes me like it. I smoke now because it helps me study. I miss the old days when it would make me sleep. Now it makes my mind race like crazy. I get really anxious and think of all my negative qualities. That might be why I like it. Maybe it is helping me in a Spiritual way.
You could try some different strains. Yet for me, I still have not found one that reminds me of 15 years ago.

Hmmm.... I'm way over 60 and it hasn't happened yet.

At what age does it start affecting one this way?

O.P. I re-read your first post. If your "connect" is calling it "pineapple" it is very likely C99, a strain that will induce a bit of paranoia in even very jaded smokers! Ask him for something a bit more "chilled" (LOL).