Honestly he seems to think as long as he is staying and has essentially done the ‘right’ thing by demonstrating how committed he is to his family, that that is the main thing
He sounds like he feels entitled to cheat, entitled to do wherever he wants.
His entitlement, arrogance and lack of integrity seems to know no bounds.
I'm wondering how he'd feel if that was your attitude after having an affair, and gifting your Other Man 20,000 quid on a Rolex or something. At the end of a luxury day together.
Do you think he'd still be there? Do you think he'd be thinking "ah ok she's doing her duty by staying with me so .. .".
It's unimaginable.
Because your relationship is totally unbalanced in terms of power.
A. I'd imagine because he's currently the bread winner and you're a sahm; he thinks you're dependant and stuck.
B. Because he knows you won't leave because you don't want the kids affected
C. Because he naturally knows/senses what you've said here - that you've known nothing else, that you don't think you can be on your own, you will avoid change etc.
(Does he know about your Mum and how you're scared history could repeat itself if you divorce?)
D. I know we only have snippets but It sounds, I'm sorry, like he's perhaps he "settled" and doesn't have (ever had?) very strong, romantic feelings while you ...do you have them for him? Another imbalance.
He knows you're taking wherever he doles out.
He knows you're going nowhere.
Given his character (which is pretty shitty tbh) I'm wondering how you'll ever be treated decently in this situation.
Even if you do a 180, as they put it in reconciliation/recovery lingo, (where you focus and yourself and make them realise you could leave it any time etc ), I'm not sure it will even change things.