Here's my take on it:
-You experience events.
-You seem to have control over some events, and other events seem to be outside of your control.
-The process that determines this feeling of control is chemical, and has nothing to do with whether or not you actually do have any control.
In other words, even though control is entirely an illusion, it is the illusion that defines our existence. Understanding it is NOT useless - most people who you would describe as "assholes" are just people with control issues.