If your family have done the best that they understood to do and were capable of doing for you, you should reciprocate. If your friends have done the best that they understood to do and were capable of doing for you, you should reciprocate. Yes, If a stranger has done the best that they understood to do and were capable of doing for you, you should reciprocate. Behave in such a manner to others, as you would like them to behave to you. Teach them, if possible, accept their ignorance if teaching them is not possible.
Life's as a ladder.
Most of us begin on the first rung. Motivation occasionally has us skipping a rung. Bob I'm old, and tired. Hopefully, my words have helped someone, somewhere. Please write to assure me, if I have accomplished any part of my goal of trying to better mankind.