The things we think we shouldn't !!

So, It's odd how most of the time we walk through life thinking we really shouldn't think or say things because it's not what we think other people would think or say only to find out really everyone is thinking the same and just not sharing. Why is the shame we assess to our own thoughts so powerful as to keep us from understanding the people around us? Maybe we should just talk and take offense less, so that in the end we are all communicating and figuring out we are truly not alone, not a one of us?