Because they can. There is a dramatic difference in talent between college and professional basketball. That difference changes everything (and makes it more boring for us).
So what would be the analogy in business or programming?
Usually guards are responsible for "penetrating and kicking" because they have the knowledge and dexterity to do so. But the average guard is maybe 6'3" 180lbs. Good centers start at 6'11".
I just don't think outsiders appreciate how much effort, skill, and knowledge it takes to drive to the basket and
a. take and make a good shot over a 7foot defender.
b. recognize the collapse and pass down low accordingly
c. recognize a double team and swing out to the parameter.
edit*: Maybe you just are not watching the right people. Have you ever seen Allen Iverson play? You'd like him. How about Dwayne Wade or Chris Paul ?