Shit the bed that's not an easy one.
I'd have to know the situation because I don't really make decisions based on relative risk, in some situations I'd take greater risks than others.
I might, if a presented probability, lean towards staying for the kids, she'd probably want that. Reckon I would were the roles reversed. In the moment however I couldn't hold back unless it were her expressed request. My job as a man is to keep her and the children safe.
A life insurance policy, the chance to use dating apps (been married since 06) etc would be nice but it's not like I'd be goimg out much, although the grandparents would likely step up.
What a shitty thing to think about.