You don't have that option if you a hunter or a Titan... And DB does a lot more damage in clearing that area, and the discouraging enemies coming back to it.
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Unless it's the crota thrall maze I generally don't want enemies running away from me because I'm trying to kill them
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Then it's not a weapon you would choose. It doesn't make it a bad one. As a warlock there are certainly sometimes I want enemies running away from me. Because PVE warlocks want to stay out of melee range fights.