The burden of proof doesn't rest on the person arguing against your borderline phrenological explanations of intelligence.
And yes, faith in humanity IS needed for an enlightened thinker.
The meaning and purpose of life will never be proven. There is plenty of room for faith in our world of rationalism.
You need more art in your life! The world is more than just a bunch of metrics in a spreadsheet to fret and argue about.
We should be skeptical of superstitions, but not skeptical of love, truth, and beauty! Don't misinterpret the quest of the Enlightenment! To listen to love and to live!