I will admit those who hold a Naturalistic world view free of religious belief do tend to think of themselves as intellectually superior. Cocky, Arrogant, Condescending? At times, yes, some can come across this way. With that being said, I have never heard of a Naturalist calling for an Inquisition or a Crusade to forcibly put down those who hold differing world views.
Most religions have at their core a belief that the adherents are special and unique and they tend to elevate themselves above others. History has shown such a mind set can lead to very bad things.
On a personal level, most Christians I know are decent people who just hold a different world view. At times, however, they can come across with a superiority complex and can be very exclusive.
To give you an example of what I mean:
My Cousin's Baptist Church has an annual ski outing to Vermont and for the past 4 years I have assisted the church with Instruction. I am an avid skier and former instructor and was offered free lodging and lift tickets
for the 4 day trip in exchange for my service. My time is scarce and is devoted mostly to school, so I was really looking forward to the trip over the President's day holiday. The week before, I was told that my services would no longer be needed. When I asked why, I was gently told that some of the parents of the kids that were attending objected to my presence, as I was not a Christian and member of the church. These people all knew me as trustworthy and responsible.
Not only did this make me feel badly, it also changed my personal views on some things. I was offering a service to the group to enhance their enjoyment of a sport; I wasn't there to discuss religion. Perhaps they got tired of their attempts at converting me and that's why I was asked to come along to begin with. Who knows.
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