College graduate not pursing their major

Because unless the subject matter is itself involved in with particular marketable skills and knowledge (e.g. law, science, technology), a "degree " merely implies that you have a certain level of intelligence and perseverance.
Continued pursuit via "dedicated" academic research tends to be a less well paid option and has its own in group squabbles and rivalries.

To add to this, technology often moves faster than four-year degrees do (or even two-year degrees). And some of us are a few years removed from our BAs. I do stuff that didn't exist when I got my BA. The Internet did not exist then.