So when you could be doing damage to high threat targets, you should confuse targets instead? I still see nothing but fail in this logic. Not saying your logic is failed, saying to sit around and confuse one target while you should be fighting another, is failed.
P.S. What powerset is that in your avatar? Energy for sure, but some of those moves are not energy. What are you doing there?
Not all dangerous targets are bosses. Boggle lets you take them out of the fight in one stroke. For example, Tsoo Sorcerors can be made harmless in on application of Boggle. Even better, now they heal your team. So yes, you do a little less damage if you take time out from attacking to apply Boggle. But in the right circumstances it's very worth it.
As for my avatar, that's not from the actual game, I made it with demo editing magic.