I wish my brain had an ON/OFF switch

While I was laying in bed last night trying to fall asleep I was pestered by my brain thinking the nuttiest things. This is what was on my mind.

So what if you woke up one morning and you mind was free of prejudices of any kind. Knowing only what would be considered logically correct. Erase what society and culture has taught you. What would you think about things?
Would you know that killing another human was wrong or would it be something you would do only for self preservation? Maybe nudity isn't shameful we just think it is. Why do we think that? Who originally told us that?

I guess my strange thought occurred as a response to some ponderings about religion. Many times we believe what our parents have taught us. But if I erase that, I wonder which religion is the real one? Are any of them? Are they all kinda based off of one original religion? I know that most people would read this and say, " Christian is the only real one, you loser!" because most of the people I know belong to that one. But how do we know. We have no PROOF. Yes, there are religious texts written thousands of years ago. Throughout translations and rewriting, are the religious texts accurate? What is real?

I could probably ramble on and on about the vastness of the universe and the possibilities of other universes inside black holes and insignificance. But my brain may explode.

Not trying to get into any arguments here, I promise. Sometimes I just like to try to think outside the box.