for me, i used to regret not doing well in my Olevels, why i did
not study hard for my subjects, then I can join the gal of my
dreams then in top JC.
15 years later, I had had a class reunion, and most of my old
classmates came up to me, and told me, their regrets - "why they
never play as hard as me".
and then I saw the gal of my dreams, after JC, she did not do well
in As.
so bottomline, regret no point lah.