The kissing issue is like pretty much everything else that people choose or dont choose to do.. purely a personal decision. I've talked with several couples who have the no kissing or no tongue policy (they may kiss on the lips but not openmouthed). The reasoning I've heard for it is that they feel it is too intimate.
I, like you guys, don't really follow the logic there as I see kissing just as I do sex, not as a love issue but as a physical issue. But then I have different boundaries of things that I will only do with my husband. I guess each couple has to come up with what their boundaries are and for some that is "no kissing"... which to be honest is a VERY HARD rule for me to stick with, when with those couples.
Julie
http://www.swingersboard.com