Is it wrong to leave during an argument with your partner to calm down?

Honey, I think you and him are not meant to be together- you handle issues differently, you can't see eye to eye, and you need to leave to be able to "calm down". As a twice-married woman in her forties (who married WAY too young at 19!), I feel that this relationship has run it's course. Time to have that "talk" with him. Too much toxic stuff to sustain this.