I'm not sure you must educate people who are truly happy where they are, but I can also see the importance of telling them about other possible realities without forcing them, which is why I like your post.
It is when people start to claim things like a (Moral) Truth people should be educated towards by someone who knows The Way, without taking their wellbeing, or the possibility of other truths and morals, into consideration that I stop being just a pessimist and start disagreeing.