Graduate school is a big step.  Considering the financial/time obligation and career focus required, it is not a decision you want to make lightly.  There are many factors to consider. 

BOTTOM LINE: more education = more options = more control/mobility= more satisfaction. 

But, that doesn’t mean you should automatically go.  For one thing, most graduate schools actually prefer applicants who have at least a year or two of work experience after completion of their undergraduate degree.  And graduate school is not just an extension of your undergraduate years - they are very different experiences.