But let me be real careful here. Some soldiers took their own life in the heat of battle to be kept from being captured by the enemy. King Saul fell on his own sword. And of course, Judas committed suicide. But the fact that there are some who committed suicide does not mean these people are in Heaven, or that their actions were approved by God.
Some people snap.
Others have delusions brought on by medicine. In other words, they commit suicide when they are not thinking clearly. I think suicide is wrong. But I also think that saying that anyone who commits suicide is going to Hell is equally wrong. We don't know what a person was thinking.