The point of this thread is the devaluing of someone.
In your case you believe being devalued could not happen, you have bomb proofed yourself from devaluation by being in full time employment.
I'm afraid devaluation can come to anyone working or not.
In your case if your h valued the nanny, childcare, teachers who spent a great deal of time with your children, but not you, not appreciating what you brought to the marriage, you would be enraged, just as op is.
I've seen many wealthy men do this with high achieving working wives, shag the nanny, the under achieving ow anyone where it not only knocks your confidence but also your beliefs.
If you are being devalued, you are being devalued, no one will feel safe, unless you pre empt it by attacking first and betrayal is an attack.
No matter who and what you do, it is very painful, no matter the circumstances, op has been overlooked, maybe on purpose, maybe not but even that smacks of being taken for granted or neglected.
I should imagine op knows his private devaluing has gone public and that is a major red flag for him checking out of the relationship.
Op you shoud definitely seek advice about your finances, purely as your instincts are kicking in about being discarded.