College helps you get a job
University opens career doors for graduates. A person having any form of tertiary education has higher chances to find a job than someone without. This is also reflected by a lower unemployment rate of graduates.
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Unemployment among university-educated workers is far lower than among those without a degree. College is, therefore, highly beneficial for securing employment.
The unemployment rate for non-college educated workers is at 3.5%. Among those with at least an undergraduate degree, it is 2.2%. You are more likely to find a job with a college degree than without one. This is because as more people go to university the educational bar is higher. A glut of university graduates in the workforce has allowed employers to prioritize those with a university degree, even for jobs that have traditionally not required any form of higher education. In 1970, 28% of jobs required a college degree. Now 66% of jobs ask that candidates have received some form of higher education. Additionally, 99% of new jobs created require a candidate with a university degree.
These statistics hide the fact that many college-educated workers are working in a job that has no need for a college degree. Around 20% of college graduates are working jobs that have no need for a college education, handing them all of the debt, without any of the economic benefits.  Also, the unemployment rate among recent graduates is actually higher than the unemployment rate among non-college educated workers. In the US, 4% of recent graduates are unemployed and 41% are underemployed—far higher than the national average of 3.6% and 34%. 
[P1] The unemployment rate of college graduates is lower than non-college educated workers. [P2] Therefore, college helps you find, and stay, employed. [P3] Therefore, a college degree is worth it.
Rejecting the premises
[Rejecting P2] Correlation doesn't mean causality. Many college graduates would be employed anyway as they work jobs that don't require a college degree.