Whenever I come across something like this, I just remind myself that with 7 billion people in the world, there's ALWAYS going to be someone who says something inappropriate. Take any issue in the world and any tragedy -- there will always be people willing to say stupid and insensitive things about it. Sometimes they are just ignorant, sometimes they are using bravado to mask their own pain, sometimes they just want attention. I find that unless it is someone who you can actually have an honest conversation with and ask them why they feel that way, its best to just not pay attention to it in the first place.
"it's good to be young but let's not kid ourselves -- it's better to pass on through those years and come out the other side with our hearts still beating;
having stared down demons and come back breathing." -- John Darnielle