OK, since my nickname is "e-mail man," I'll comment on this.
I think e-mail is a GREAT way to say EXACTLY what you want to say, with the words you want to use, and THEN USE IT AS THE STARTING POINT FOR AN IN-PERSON CONVERSATION. So long as it's not used to AVOID a conversation, or IN PLACE OF one, I not only think there's nothing wrong with it, I think it's PREFERABLE. In-person conversations about "hot-button" issues tend to get the other person's defense mechanism up INSTANTLY, and then the entire conversation is filtered thru it and you're not really "heard."
Just my opinion -- but I think your words are loving and true.