Why would you take the time to engage him in debate? It's pointless. His posts aren't generally coherent enough to respond to other than to let him know the world would be better off if he killed himself.
Nahtyn, if you do decide to go that route since you have no faith in humanity and all, there was a great suggestion on these boards for a creative way to go out in style. I think it was something like this.
Get on top of a reasonably tall building. Put a noose made of piano wire around your neck and tie the other end to something. Tie a rope to your ankle, making sure it's a little shorter than the bldg. Make sure the piano wire is considerably shorter than the rope. Then super glue your hands to your head and let it dry. Now jump. If all goes as planned, you'll be hanging upside down and holding your own severed head and blood will be squirting all over the pavement from your fresh neck stump.
If you do it, make sure you get someone to post it on Youtube and link it here. You'll be famous!