I noticed a comments thread on a website that I visited. The title: 'Are atheists extremists?' The general argument seemed to be that it is an extreme position not to believe in a god. My perspective is that extremism grows from the behavior modification that you think needs to occur in order to satisfy your beliefs. It seems to me that another defining characteristic of extremism is the need that the range of behaviors that you think need to occur in order to satisfy your beliefs must be enforced upon others. Hence, if you think that the baby Jesus weeps every time a man kisses another man then you're an extremist. If you think that you need to bomb an abortion clinic in order to prevent the baby Jesus from crying then you're an extremist. If you think that adultery should be punished through the lopping off of the offenders head, then, yep, you're an extremist.
However, if you don't subscribe to a set of beliefs I fail to see how you're an extremist. I mean, there are political extremists - hardcore communists, fascists, etc - but I think you can lay responsibility for that extremism at the door of the particular political doctrine, not at an absence of religious belief.
I believe that people should engage in pre-marital sex if they so desire. I believe that people should avoid pre-marital sex is their particular superstition prescribes that it be so. Hell, if you want to sit around with a bunch of other people drinking the poisoned orange juice I say you do it (just make sure that it's all drunk by consenting adults). I'm pretty sure that most of my 'atheist' friends would feel the same way. So, are we extreme?