Real world situation: I call my parents place asking for my sister's email addresses. Why? I don't have it, and I want to send them Amazon.com gift certificates for Christmas. I search my gmail account - they've never sent me a message.
So I ask for it.
I get a Facebook message from my sister. "Why are you asking for my email address. Don't you have it?"
This may be the dumbest question I have ever been asked. If I had it, would I be asking for it? It's 5 days until Christmas. Why the hell would I be asking for an email address?
And why would you send me a Facebook message *instead of just emailing me*? Do my sisters think I'm going to sign them up for tentacle nostril rape porn spam or something?
People wonder why I only visit my family once a year. This is why.