Every few years, the enlisted corps in the Air Force brings this fatally flawed argument up as well. "Why can't enlisted people fly jets? Why do you need a Bachelor's degree to be an officer?" This is very much the same argument you are making.
I have an analogy (college word) that may help you. Say you have two pilots, one has 500 hours and the other one has 3,000 hours. Is the 3,000 hour pilot always going to be the better pilot? The one who makes all the right decisions? The one with the golden hands? No, but in the aggregate ('nother college word), the group of pilots who have 3,000 hours are better pilots that the group at 500 hours.
The same applies to those with and without college degrees. The aggregate group of those with a college degree is generally more intelligent, more well rounded, and better prepared for life. I'm sorry it's a fact.