"Sometimes, like in the case of that girl, it's sad. I don't feel much worse than that, but it's a little sad, still. However, most of the time, I look at the people who would kill themselves over this and think, 'and the genepool got minutely better that day.'"
I realize that you're trying to make a comment about intelligence, but what you have actually done is shown an intense ignorance about mental illness. Someone who is thinking straight is generally not going to kill themselves over something like this. The people who will actually die are people who need help anyway.
While you may have intended your comment to be tongue in cheek, it's not funny. It's insensitive, rude, and it makes me very sad for you.