"Deal breakers" vary from person to person as well as from one scenario to another. It's not unusual for people to swear if such and such were to happen they'd be gone!
However when it does happen they (find a reason) to stay.
I suppose there is a difference between the "hypothetical" and "life".
For me personally my "deal breakers" would include (cheating, alcohol/drug addiction, gambling addiction, criminal behavior, adverse financial irresponsibility that affects our living standards, emotional/physical abuse or neglect, constant arguing and drama.)
Like attracts like and opposites attract divorce attorneys!
There is no amount of communication or work that can overcome being with someone who simply does not want what you want.
There are only two ways to experience joy and peace of mind in relationships: We either get what we want or we learn to be happy with what we have. Accept them as (is) or move on.
The choice is up to us!
“Some people think that it’s holding on that makes one strong; sometimes it’s letting go.” — unknown