Gee, lots of peeps drunk or sober are like the way you said you used to be!
Sensitivity to sick people is important, granted, but we are all only human, and can only try.
It takes some of us much longer than others (I'm 70).... a slow learner, but better late than never.
WE are all to a large degree responsible for our selves IMO BUT SOME HELP AND KINDNESS FROM OTHERS NEVER GOES ASTRAY.