Is it wrong for someone to ignore you after an argument

This is too vague for me.

I was going to say that it is OK to check out of any discussion with anybody at all, family member, loved one, complete stranger, whoever, whenever you feel you don't want to continue the discussion. That is a person's right. However that is a rather general answer. I don't know which side of the discussions you are on, and who the other person or persons are, and whether you are an adult or a child, or what the discussions are about. All these things would affect my answer. So don't take what I wrote first as permission to walk away from a teacher or parent when they are telling you things you need to hear.

sorry, i checked out somewhere in the original preamble

what was the question again?

In my experience, it is often a relief.

Spoken by a wise person.