If you play in teams like that then you need to find new members. Playing recklessly regardless of your Super setup will result in a team wipe, or be a detriment to the team. Self-rez isn't the reasoning behind it. Good players can use it and not be a detriment to the team. Bad players will be a detriment regardless of what they use. Think of all the times that a team wipe could have been avoided because of a self-reviving Warlock wasn't on your team. I can think of a few times from my experience. Being able to self-rez is a tool, just like popping a bubble, throwing angry balls of space magic, or going invisible to get through to a checkpoint (which doesn't generate orbs, either). Being able to use those tools appropriately and at the appropriate time is the sign of a good player. It's also a really good tool when you are a man or two down in the VoG.