It is very hard to be open about my beliefs, especially regarding facts on history and science I have I not have enough evidence to agree with one side or another. Most of the time, I find the hostile social attitudes of one side or the other leads me to want nothing to do with their views. When someone argues by saying "It was proven a long time ago", or "Only morons disagree with was most experts agree on", and do not source the definitive proof, I know that this person is unreasonable to communicate with. Better off finding a source I trust, then make my own conclusion.