Suicide rates for transgendered folks are much, much higher than both the general population and lesbian/gay/bisexual populations. Why is that? Not sure (and the specific study that looked at it notes more research is needed). But it's a fact.
http://www.speakingofsuicide.com/2015/01/02/transgender-suicide/
Might have something to do with the treatment they receive from the public at large. Could it be that the day you realize that something is not quite right, and begin to do something about it, that being mistreated by everyone around you could lead to depression?
Naw, that's not logical in the least. Keep believing it's because they're bad people, and that they deserve to kill themselves.