I think it's a bit mean to hold them responsible for the suicide and to bring it up continuously for the rest of their lives
I agree but I do take issue with people who act like the initial prank was no big deal, for the reasons i4u detailed.
I've never understood why so many people love pranking. I just can't see what's funny about making someone look and feel as stupid as possible, and sometimes scared. I just don't see what everyone else sees when it comes to any kind of fun or entertainment values in pranking, no matter how ultimately harmless a prank can be.