Totally unscientific observation, but amongst the wide and varied circle of friends and acquaintances I've come across in my five decades on this Planet,Why do they do it? You will always get found out one way or another
A GWENT Police officer has been sacked for filming a sex act in his patrol car while on duty.www.southwalesargus.co.uk
Cairn Newton-Evans, former chief officer of the Dyfed-Powys Police Special Constabulary, touched two colleagues in a Carmarthen pub last monthwww.walesonline.co.uk
Plus any number of similar falls from grace
Serving Police Officers seem to represent an overly large proportion of those who also one could also catagorise as adulterers, often as not with each other.
My ex BiL carries the torch for serial philanderer based on numbers alone, but being Arab I suspect it has rather more of a cultural aspect attached.