I did not say it was unreasonable to "gain a sense of the uniquely different cultural attitudes and priorities that are prevalent in a society".
Based on your analysis, I think you have misinterpreted both the intent and premise of my comment.
What I actually said was precisely what I did say: that you should not be quick to publicly espouse these generalizations that you have anecdotally observed. To a general audience of people who do not know you, the words that you write on here are the only basis we have on which to understand you as a person, short of getting to know you personally.
Perhaps you have never been on the receiving end of a racial stereotype or generalization, even an "innocent" one. Even if the comments are not made with malicious intent, and believe me I know the OP had absolutely no malicious intent at all, stereotypes can and do make some people uncomfortable to hear.
Why is that? Well, there are lots of reasons. If for nothing else, it makes the member of the group in question the "Other". If only for a brief moment in time the individual ceases to exist; their racial characteristics are being now being discussed, rationalized, and analyzed by the others in the room.
I really just wanted to give my honest advice to a nice guy (the OP), that it would be wise to avoid allowing this sort of discussion be associated with him as a person, unintentionally immortalized by the internet.