I sound retarded in the above comment, what with "groupings" of "people"... but hell, We all belong to many groups, so with that said, here's some thoughts on (Semitic?) culture:
Oh, but you get it...
Okay, well actually its not really meant as flattery; it is sincere:
I've dated two non-religious "Jews" (is there another word, I don't know?) in my days, and well, both were extremely smart, assertive, funny... and good lord, the sexsexsexsex)-- and in my mind this is totally related to the kinds of environments they were raised in-- I went to family events with both, and they were-- interesting to say the least. This is where I'm drawing my cultural remarks from-- to say that these folks were tight-knit and all very intelligtent (meaning sharp, witty, etc) and learned (meaning if not schooled, then certainly they were well-read) and relaxed would be the understatement of the century.
So while you may not value your religious background (and you shouldn't-- no one should, really... (imagine: the middle east without religion :D)) I'd say that Jewish folk have some of the world's richest cultural heritage, and in addition to that, many methods of keeping that heritage strong through generations. This is probably why (again, generalizing) relative to other groups of humans, there's a disproportionate representation of Jewish folk among the wealthy: It's the cultural emphasis on knowledge and community, and there's no way to put a price on that.