The good Dr provides prospective on this, nothing more.  I have not experienced this, I think.  On the other hand have seen the devastation, it has had on my brother and his children.  It is a personal attack on the spouse, it can hurt children and it seems selfish.  No it is selfish.   Beyond, short term personal satisfaction, it has victims.  Finacial cost can ruin people, and of course family cost.  Sometimes you have to look in the mirror, and ask yourself if you want to be what you might be.  Those that cheat, fall into a different group than those who do not.