When you send me an email requesting help and you mark it Urgent with that little urgent flag option, you look like a big jerk, similar to someone rushing into the DMV and pushing their way to the head of the line.
“Excuse me, everyone else, MY problem is IMPORTANT!”
Stop doing that.
The “priority” field is one of those awful design ideas that completely ignores human nature. I love, in particular, the people who you communicate with on a regular basis and from whom every email is marked “high priority”.
I always imagine them running in here with the “!!” icon over their head, shouting wildly.