Dear Arti,
You may have added/suggested those topics that are not taboo-so that after erasing the topics listed out by you-what is left that generates discussion?? In my thirty seven years of experience I agree that Politics, Women/Men and religion are a NO! NO! even in the Army-but trust me the former two dominated most discussions? I used the word "discussion" and not arguement-yes religion always boiled down to heated exchanges and should never be talked in any Office.
Some suggested topics-Sports-Cricket Vs Football (I prefer Football), Movies,latest Mobile/I-Pod, environment issues and so on. Its the "Yawn" factor that makes topics more discussed?? think about it!
Regards,
Col J H Mayne