Because community colleges, unlike government schools, truly belong to the public. The professors are not “educators”: they are either professors or professionals in their fields (I learned calculus from two engineers, computer science from computer scientists, and chemistry from a chemist). They also permit freedom of association which by definition “public schools” do not. I chose to attend, as did every other student there.
America’s higher education is still the admiration of the world, and even the ugly stepchild of community colleges deserve some credit. I went on to a private four year college and then a state university top 40 in my field graduate program.