I don't think you need to look very far into the ENTP's characteristics to see why we eschew traditional values and religion...
Now I followed the same path that most ENTPs likely do. In my high school/college years I poked holes in the belief system I was raised in (Catholic, traditional societal values, and conservative politics) and did a lot of stupid things. I guess you could say that I fancied myself a rebel. Surprise surprise.
Yet there was this vivid, intuitive moment one day that I would return to the Church, and I responded to it with a yes. (Of course, still fancying myself a rebel I also responded with a "I'm going to change the Church from within" sort of impulse. But it wasn't I who changed the Church it was the Church who changed me.) And over the years through a number of other experiences and decisions I came back full circle with the original belief system I was given, just with my own flair and in my own way. I guess you could say I "prodigal son'ed" my beliefs.
But I kind of feel like an anomaly within my own type. I've seen the statistics on sites like 16personalities.com. ENTPs are one of the least likely to be religious & politically/socially conservative. Am I really that much of an anomaly? Or am I just falling into the perception as an ENTP that I am not like others? (Even if that is my own type.)
I still find myself kind of contrarian to a lot of the SJ mentality in traditional society, yet intellectually and intuitively I find them to be my allies. In fact, it's almost a mark of pride that I find myself to be an anomaly both in traditional society (even though I find it so far to be true) and even within my own type.