Why is shield swipe so bad?

[reality_check]

This is like that one thread complaining about CoS... It's extra damage and people complain about it. The question is not "Why is X so bad?" It's "Why are you complaining about extra damage/tp management?"

I'm not complaining about extra DPS. I'm replying to the person who said that it's one of our best DPS abilities. The ability is, at best, a 0.5-2% DPS increase under the correct circumstances if you're arguing that this was the design of shield swipe. Over the course of the fight, you might actually LOSE DPS by using Shield Swipe because it delays your building to Rage of Halone.