How important is feeling understood by your partner?

How important is it for you to feel understood in a relationship? If everything else is good, would it be a deal breaker to have very little in common and feel like you aren't understood by your partner? Even if they are very respectful, attractive, kind, take care of you and the household, is supportive, goes above and beyond and is otherwise the perfect partner. ( 30f, 35m ) fffffffffffffffffffff fffffffffffffffffffff fffffffffffffffffffff fffffffffffffffffffff fffffffffffffffffffff ffffffffff