Why? because ignorance is a blindfold. You may think that you are happy, but that is not true happiness. So, I would definitely choose knowledge over ignorance any day. Even if that knowledge brings suffering.
It has a lot to do with the bigger picture vs. the smaller picture. It takes knowledge to be able to put things into perspective, once we know what is out there, then we can put our own lives into perspective and analyze and think: "am I settling for a superficial, mediocre,contempt kind of happiness?" In conclusion, while I realize that knowledge or wisdom does not necessarily make a person happy, it can bring power into his/her life. Knowledge is necessary for a person to be able to stand up for themselves. As well it is also necessary for a person to realize that maybe they are settling for a mediocre type of happiness. Or that maybe their lives is better than they