I use self res when I might be required to put myself at risk. I find it as a really good team role. There have been countless times where I have needed to defend both middle and help with left or right confluxes in vog and it means that I can put myself at risk for the better of the team. Also, self res warlocks are the best to carry any relic. You are getting smashed by really hectic enemies. If you drop the relic someone needs to leave their post. If I have self res, no one needs to worry. Can you honestly say that self res would not have helped you out at any stage? I call rubbish if you this that it is never needed and that you can go through every raid with out ever having to wipe. It is useless in crucible though, I will give you that. Void walker all the way in pvp.