A good reason is appreciated. Because if you want to get a job a community college is good enough.
An excellent question which not many like to think about because they probably don't like the answer.
The cold hard truth is that most of higher education is about signaling to employers that you're willing to slog it out when things get tough. There an excellent book out on this:
Ultimately because the majority of decent paying jobs require 'a degree'. Some people just choose degrees like 'business studies' to fulfill this requirement. Otherwise, the options are limited to apprenticeships (if you're lucky) and Tesco.
Of course, many vocational degrees are required as knowledge and experience in specific skills are essential e.g Medicine, Law
You can't hope to become a scientist without a pH.D.
Further education without a degree worked well in the past. Degrees are required for some careers like medicine, but taking a degree in geography or history on the basis that it will open doors or act as a passport to a career in management boils down to little more than signalling.