The brain of area man Bill Miller has had to do some hard thinking. What is he ever going to achieve?
Bill has had some longer periods of cohabitation with females, but none of it led to anything. As far as the brain knows, they were all smart enough to use birth control.
In his various jobs Bill has done well enough, but basically he is just the average disposable worker, such as those at Amazon or the Goodwill store where he sorted clothing for a year.
So the brain does not want to make life hard for Bill and make him some kind of achiever. And the brain has enough work keeping Bill alive and safe. He does not need to have Bill pondering difficult tasks or have emotional issues related to work while driving a rather unreliable, and old, Toyota Corolla to the bar after work.
The brain thinks Bill will survive to almost the age of 50. Might as well make the best of it.