On the other hand, by that point, you'll have a bunch of habits and ways of thinking hardwired that you did not choose for yourself. It also becomes something of a Sapir-Worf dilemma, where it becomes very difficult to even realize one's thinking has been shaped in this way.

My experience of interacting with older, more stable 'intellectuals' who do not have a broad background of reading is an acquired indolence towards foreign ideas and older ideas, subsisting on a shallow 'tolerance' as a sign of their broad mindedness.