Kaja
You are actually the one constantly pushing everyone against any use of a cb which is not just for sex play and loudly proclaiming that everything that does not fit into your system of values is "wrong" and "no, no, no" etc.
Yes, I do think mutually exchanging keys is actually a much stronger statement in regards to "I am your`s" than just a symbolic act that has no consequences in the end. What is wrong with that statement? Unlike you, I am not claiming everything else than my opinion is wrong, I just exercise the right to express my opinion and again unlike you I do it in a respectful way and don't tell people how wrong they are if they live their life according to values I do not share.