I check people a lot just because as a noob i got in the habit of checking mobs even if I know they're Too Weak. Idk...
I check people to see if they are brave enough to augment stuff.
I check people to see what their wearing.
I check people to read bazaar comments.
I check people on accident.
I check people on accident.
Seriously, I always accidentally check people.
I check Impossible to Gauge mobs mid fight out of habit. I check mobs while I'm running by even if I'm 75 in West Ron. Idk... idm being checked if I did I'd just put a filter up anyway.