A Married women having an affair is often a result of her seeking something that is lacking in the marriage or getting into a rut with no variety or lacking some excitement so she looks elsewhere.
I have been with a number of married woman and they certainly don't hold back and have been amazing in bed.
Mostly they only want a short fling to get it out of there system and that can be a good thing as one does not have the time to get attached.
From my point of view I now prefer married women for that reason
Having sex with a married women is a totally different experience with each woman, The sensation, the way she reacts when having sex, the fact she now has someone different fucking her and the feel of being inside someone different can be extremely stimulating.