Ignorance

there is a very easy answer to this question namely the human mind will always look for more and more understanding of the world around itself, there for seeking knowledge (why we want to understand what happens around us, is because we want to know what our purpose is in this world, and to know our purpose we must also gain insight in that world) about ignorance being bliss how can anyone really know? since there is noone in this world who is ignorant, and don't say kids are ignorant cause they are not.