I differ from others in thinking that people are entitled to be ignorant and reap the consequences of that ignorance for themselves and others. He or she who harms others, whether through ignorance or not, will cause ugliness and pollution to enter his or her soul.
Whether or not this bothers the person is inconsequential. They will be accountable for their actions in the eyes of the cosmos and the Creator not to say other human beings. In other words, I do not see acquiring knowledge as a moral duty, just a way to bring harmony into one's life and perhaps the lives of others.