Many people stop developingg personally as soon as they can. Which can be frustrating to see it you pursued higher education and learned how the world actually works while they work, watch TV and drink beer.
But people can only avoid responsibility for so long until life forces them to grow up. Just wait until these people have children or their parents die. Plenty old people are dumb as a rock still, but not as many as you would expect from the numbers. Wisdom is a form of knowledge and people grow, evenh without academic fertilizer.
Geforce 2 fx