Yes, too much information is not good, but not enough is bad.
In this situation, its best to give yourself some quiet time to absorb the information. Absorb, digest & then rethink (if you have the ability/time to do that). And stop taking in more until what you have is properly taken care of. You have to give yourself the time to stop taking in knowledge, and let your own brain desminate.
As far as "ignorance" - i guess it depends on the situation. Ignorant of what? I would never want to make any "life" decisions, or decisions of real importance without knowing as much as I can - good & bad. That's paramount in making the right choices we are all faced with in life.
Take my son's situation. As soon as he was diagnosed, I took crash courses in everything I could find regarding his condition, all the way from medical to legal stuff. It was overwhelming and at times I wanted to be one of those parents that lived in blissful ignorance, just doing what they were told & never really taking control over their own situation. But, I wouldn't change it for the world, because I have control, I have confidence & I can make choices based on what I do know, good & bad.
Love ya!