Because you need that word for the next steps: words like "master" and "doctor" or even "engineer" that have real dollar values.
With a basic foundation in a topic, Wikipedia and open journals are much more valuable learning places than a lecture hall or study group. Those basic foundations should be built much earlier in primary education.
You can become a master programmer with no degree at all. Look at all the successful CEOs who dropped out.
Case in point, being if you've real value to offer. Absence of that degree or paper will never come in your way.