Sorry....your personal pain and anguish, no matter how debilitating, no matter how terrible, is still personal, and does not convey to you the right to inflict pain on anyone else. There are whole buildings (hospitals/clinics) full of counselors, doctors (mental and physical) whose life's work is to help resolve or at least soothe personal pain. There are (usually) trusted family and friends who could help, whose shoulders one may cry on.

Will Smith, no matter the reason, was just plain wrong and must be called out. If he gets away with this, it means that any time a comedian or anybody else tells a joke that you don't like, that "hits" too close to home, you have the "right" to beat them down.