You have no actually good reason to remain in your relationship if you're a lying adulterer. You only have evil, selfish reasons.
And sticking with a broken marriage "for the sake of the kids" isn't always the wrong thing to do. It depends.
Cheating involves deception, the deception is telling your partner that they're your exclusive romantic interest when they're not. If everybody knows and everyone is fine with it, then there is no problem.
I figured the idea was more "having an affair can be OK if you really need it because your marriage sucks, divorce and a negotiated open relationship are not viable options, and provided no one finds out"
Maybe...
"Up yours woke religious moralists. We'll see who condemns who."
that bar is so high, I applaud anyone who can even comprehend it.