Should my happiness be dependent on the suffering of others?

Once I asked a wise man "Why should I be happy?" He said "Because there are people more miserable than you. Thank God that at least you are better than them." There are couple of depressed kids living in my neighborhood(people call them mad). Sometimes I feel happy that at least I am not depressed or mad. I use their depression as a reason for my happiness. My question is (from the Buddhist point of view): Should my happiness be dependent upon the suffering of others? In other words should my happiness be dependent upon my ability to find an example of new low in the human suffering?