Why is it so hard to be satisfied with standard American life?
I really mean that without any malice.
I genuinely cannot understand how so many people can live being totally satisfied with a career in sales, a nice house, and a modest amount of loans that will follow them to the grave.

Why do I constantly have to have a nagging feeling of dissatisfaction?
Or does everyone feel that, and they just cope or suppress it?  

Bukowski says it well:
“How close we all are to being nothing most of the time
And
Some of us nothing all of the time”