If you say that you're leaving the conversation, there's no need to immediately follow it up with an attempt to get the last word in, especially not in the form

If you say that you're leaving the conversation, there's no need to immediately follow it up with an attempt to get the last word in, especially not in the form of multiple attacks on someone else. In fact, there's no need to announce it at all. Simply leaving the conversation would be respectable behavior. Repeatedly attacking others is not respectable behavior. For what it's worth, your posting seemed quite competent and informed, and would have stood well had your repeated personal attacks not diminished it. Note that since you said you're leaving the conversation, I don't expect a reply to this, and I wouldn't begrudge you for ignoring it. Indeed, I will assume good faith and trust that you will keep your word... this time.