Hmm, on mine it actually won't let you kill it. I know what it is and why it's there, but I'm just bored and wouldn't mind a kernel panic.
I clicked "Quit Process" and it said that quitting it would affect the performance of my computer. Duh. Anyway, I clicked "Force Quit", and it asked me to authorize with my password. I did, and nothing happened. It seems my MAc is smart enough to hold its own. 🙂