Though I don't have numbers immediately available to back it up, income is significantly lower unless a "soft major" (read as: social sciences) attends graduate school. Those students which graduate in Political Science, Sociology, Psychology, etc. are faced with very low incomes or no job with only a Bachelor's for the most part. Engineering, Accounting, and even "Ology" majors see a much higher placement and pay right out of graduate school.

I know that in admissions to many of the law schools I am applying to, a 3.8 in History and a 3.3 in Mechanical Engineering are comparable grades to the admissions committees. The inflated GPA which soft majors enjoy really does little except possibly inflate ego. And as an Econ major, I can tell you that me and my fellow soft major comrades already had inflated egos as is... it's sad really.