This topic describes almost perfectly what has happened to me, and as I found out later, most skeptics have had experiences similar to mine. People feel threatened when the beliefs they base their whole lives around are challenged, even if all you are doing is asking open-ended questions. Many people, especially believers, do not know the difference between disagreement and a personal attack (and thus will use personal attacks to state their own disagreements). I'll repost what I said on "Ain't No God" a couple months ago:
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Basically, you guys were right about the interaction between skeptics and believers. Perhaps the two groups were never meant to get along. The reason I say this is because I've managed to lose a lot of friends recently. There is too large a rift between the way we think. People hear questions being asked, and they take it as a personal affront. People hear arguments being made, and they think logical argumentation is the same as a fight, i.e. an "argument" between spouses, say. People see a debate forming, and they think that a debate, instead of being an exchange of ideas between matched sides, is tantamount to calling the other side stupid.
Socrates believed that it is through constant questioning, debating, and opening up a dialogue with people of differing views, that one learns new things and comes to a better understanding of reality. So he went out and engaged the sophists of his time, the self-proclaimed experts on everything who were so certain of their convictions, and that their ways were right. He was not trying to prove that he was better than them; quite the contrary. He was setting out to prove that, despite the popular conception of his being the wisest man around, true wisdom is not something he actually possesses. He wanted to debunk the notion that he was the wisest around, so he sought out those who professed true wisdom. In doing so, he made a ton of enemies.
People will never like having their personal convictions and dogmatic assumptions challenged, even though that's precisely what skeptics do in order to seek the truth. It's human nature to resent being proven wrong, or being made a fool of in front of others. Religious institutions base their power on getting people to never question anything, and on never having to admit that they were ever wrong.
Most human beings are rash, intellectually lazy, and will always seek the simplest explanations for the things in their lives. They're content with their political correctness, and will lash out at anyone who shatters their security bubble. By asking simple questions, and making a few politically incorrect jokes (which in retrospect only another skeptic would probably understand) I have turned them all against me. I never lied to them, I have never held back anything, and I would have expected the same blunt honesty in return. But some people value loyalty and security over honesty.
Perhaps I was an idealistic fool to think that I could remain friends with people like that. I was so eager to make as many friends as I could that I never stopped to think about what kinds of people I was getting involved with. I thought I could help people understand my point of view. I was wrong. My "friends" saw me as an antagonist, and as such they were so ready to believe the worst about me and everything I said to them, that they blamed me for all their personal problems.
And later on I said:
What upset me the most was the fact that even that I was one of the most tolerant, liberal-minded, and pacific atheists around, I still got accused of being militant, fundamentalist, or shoving my beliefs down other people's throats. Yes I stated my views, spoke my mind, challenged erroneous conclusions, and attempted to clear up any misconceptions people may have had. However I never asked anyone to accept what I said at face value, I never tried to get anyone to abandon their faith, and I always explained the reasoning behind what I said.
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Sometimes yes, the things I hear people talking about are so ridiculous that I feel I just have to speak up. In my case, the discussion was about faith healing and how it can cure cancer. You do the math; people have died because of beliefs like this. But none of that mattered to them. Reactions I have gotten have ranged from people being offended, intimidated, and feeling outright threatened by me. I have been called arrogant, smug, self-righteous, intolerant, callous, you name it.
I've recently been thinking that it might be for the best if I only discussed topics of skepticism in front of people who are themselves skeptics or critical thinkers. I'm probably less likely to be misunderstood or to offend someone due to their being overly sensitive and taking everything the wrong way. It was with that in mind that I finally decided to join JREF. I'm not looking to make "friends," mind you, because I know now that "friends" will let you down, disappear, or slip away when life becomes complicated. I just want to be able to talk about the things that interest me.