71. The tenure track is brutal.

The more time that you sink into graduate school, the more invested you become in an academic career (see Reason 29), and the holy grail for job seekers on the highly competitive academic job market is a tenure-track appointment as an assistant professor. Unfortunately, an assistant professorship is only a temporary, probationary position that lasts a maximum of 5-7 years. Toward the end of that period, an assistant professor applies for tenure, which is (more or less) a guarantee of permanent employment. The requirements for tenure vary, but you are generally expected to have published at least one book (sometimes two)—a feat made ever more difficult by the realities of the academic publishing business (see Reason 34)—as well as a number of journal articles. Of course, you will also have had to have taught a full load of courses every year, performed your faculty service obligations, and done it all to the satisfaction of your students, colleagues, and administrative superiors.

What happens if you are denied tenure? You’re fired. That’s it. You may have a second chance to apply for tenure, but if you do not have tenure by the end of your probationary employment period, you will be cleaning out your desk and saying goodbye to your colleagues (who voted to fire you). By now you may be in your 40s, but you will find yourself back on the vicious job market, and with the stigma of having been denied tenure. At this point, you will likely have spent a decade in graduate school, perhaps a few years as an adjunct, and six more years as an assistant professor. And yet you will have been found unfit for the one job for which all of those years were spent in preparation.