Why Are CPANs So Disagreeable & Sometimes Vindictive?!

Why are CPANs so difficult to deal with in day to day life? Why do they react so badly to seemingly very little? My CPAN is always 'offended'...why? Once a relationship is coming to an end, why are some so focussed on causing upset, grief and pain? Why must they always feel they need to be seen to 'win?' Why are they so focussed on money and material things to the extent they seem to want to destroy a person they purport to have loved beyond any other? Once again taking a look at these questions and more, but from the unique perspective of a CPAN, we aim to provide valuable insight into their thinking and behaviour