‘I’m gonna stay in my shitty abusive relationship I’ll just cheat on them’ is not a good POV IMHO.
That’s literally the worst interpretation of the situation.
A bit similar to you I can’t understand people staying in an abusive relationship - as in I can’t imaging this happening to me. Quite similar as I can’t understand how people can have anorexia. Yet it is indisputable that both exist and people are suffering from them. If you don’t have any cases within your family or acquaintances just look it up there are loads of sources both from psych help sites and just novels.
Sorry, I’m way too busy too to explore this total and utter strawman any further.