Those who ask the difficult questions, like Why are we here? From where do we derive morals? and What does it all really mean, when you get right down to it? have given humanity amazing philosophical insights and ethical guidance.
Unfortunately, thinking too much about these issues can sometimes also lead to the brains of those philosophizing rejecting the difficulty - feeling the pressure just a little too much! Then again, maybe it's a wee bit of madness that leads great philosophers to try to seek out the answers in the first place.