I really do think they actually believe themselves. It's part of the denial, the justification and the rationalization of it all. Those aren't necessarily conscious coping mechanisms. Brain chemicals altered by euphoria and who knows what else in the midlife male brain, along with whatever underlying narcissism abides there.
My H actually teaches this stuff to chaplains--how our "stuff" gets in the way of being healthy and whole, and how to work to get past our stuff. And he's totally and absolutely delusional right now, and I know he believes all the BS he's putting out.
M60 H52 D20 M14 yrs OW-old gf from 1986 bomb-5/18/08 H filed for D-9/10/08 D final 4/24/09 xH remarried (not OW) 2012