Ok I will respond to your long rambling one paragraph at a time:
Anger is not an excuse, never was never will. It's better to walk away when angry rather than saying stuff you don't mean. However many people don't know when to walk away and they say stuff they don't mean in order to feel they won the argument. Is it right? No. Can it be changed? Absolutely, with COMMUNICATION.
I don't know how you concluded that in my relationship, that my spouse and I call each other names? Maybe ignorance or arrogance from your part.
I quoted the op's original post, which indicates that this was the first time. That she "THINKS" this could happen again (I underlined the word and bolded it for you too). Again I'm not saying the guy is an angel but humans make mistakes especially when angry. COMMUNICATION to establish BOUNDARIES is necessary (what I've been trying to say from the begining) walking away from the first argument doesn't establish your boundaries.
Also what made you conclude he doesn't care? And if the op divorces her husband, I'm gonna be offended? That's a new one, I don't know the op, the op don't know me. It won't affect me in any way or shape.
Congrats on coming close to your retirement and your 15th year anniversary. But I'm pretty sure your boundaries were not established without COMMUNICATION which what I've been trying to say the whole time. Im sure communicating doesn't make you miserable or in a bad marriage, I thought it would actually make your life with your spouse better.
My views are dangerous to opinions that encourage spouses to walk away from a marriage just because one spouse made a mistake which is absolutely dangerous to humanity.
If it's a repeat l, absolutely I got your back and I would say get out. But these two love birds just got married, they just had their real first argument. Why ruin their marriage by telling them to divorce when they can fix it?
Op: you are an adult woman who is intelligent and knows what she wants from her spouse.
I'm not advising you to stay in an unhealthy, unhappy, disrespectful relationship with your husband like these people are trying to make me sound like.
What I'm advising is, since this is the first time your husband disrespected you in a moment of anger. Communicate your expectations to establish your boundaries.
If such behavior re-occurs, than walking out is the strongest solution and divorce is an even better solution because you already established your boundaries.
This is only an advise I'm not saying you should do it. You are a free woman who can chose how to direct her life.