I guess there is not one correct (or close to correct!) theory.
I do think it is 110% easier for the WAS rather than the LBS no matter what the circumstance. In most cases the WAS have planned their exit for some time and detached in the most comfortable way possible for them. Then they bomb drop and go about their merry way and deal with next no fallout. Or, they don't deal with the fallout in the same way the LBS is forced to. Add in an affair and it makes it 10x easier for the WAS as they have "good stuff" and can really shelf reality.
I don't know of many second marriages that end in divorce. I am just talking about the people I know IRL. I do know that the women I know that divorced waited a long time to remarry (if they ever did) while the men I know got married quite fast.
I always wonder that about my H. He doesn't want to be with me, we have no contact yet he begged me to stay separated for three years which would prevent him from getting married again until at least 2013 or 2014 depending on how long our divorce took. He has been with OW for over two years and has guaranteed himself at least three more years of no full commitment to her. I used to think it was all about the health insurance but w/the money my H makes it certainly would not kill him just to pay it and get divorced.
I guess there are too many factors (age, belief system, children) to really put it all in one category.
