If a decision is not made, I feel as though I HAVE to make some sort of decision or I'll go insane. (Well, maybe not insane, but I do feel as though the world is crashing down on me a bit until I make one) I am a ball of nerves until I make the decision - regardless of what the decision may be. I've been known to make "snap decisions", sometimes wrong ones and sometimes right ones, simply to satisfy my need for closure. I've also found myself in situations that I didn't intend to be in because of my rush to gain closure.
Also, I like to be in control of the decision. If I feel as though I'm going to lose control with the decision, then I may make a snap decision to put the ball back in my court. It's not a great quality.