I think that in REALITY, when a woman gets involved in an ongoing EA, it's usually much more powerful (or "worse," if you must) for all the reasons you state about what an emotional connection means to a woman. Couple that with the fact that if left alone, these EAs usually become PAs anyway, now you've got the worst of all.
However, most men don't understand that. Most men do think it's "just" an EA -- to their great mistake. In reality, a one- or even a three-night stand, with little emotional connection, is far easier to bust up as far as affairs go.
Puppy
I agree, but let me also throw this in there as well. An EA for man can be just as strong. I am saying this from my perspective and what occured in my sitch. This started as a "Friendship" that quickly became and EA and then a PA. Whether its a man or a woman, when you develop and emotional attachment to someone that superceeds your R with your primary partner, the scenario plays out much the same. The idealization, fantasy, etc... I can only speak from my experiences, but once my H had an emotional connection to his OW, there was nothing that would keep him from her. I think if it had been only sex, he would have been able to walk away once the discovery was made. Because their A started out as an EA first, the connection is harder to break. My H is far more reluctant to break the emotional connection, rather than just the physical one. For him, the fear of not getting his "emotional fix" far outweighs the physical.
M:39 H:39 K:S14;D8 T:22yr M:15yrs S:12/28/07 EA/PA 3/14/08 OW preg 11/17/08 born 12/12/08 his ~~~~~~~ Never allow someone to be your priority while allowing yourself to be their option