Because your friends live inside your computer."
This sounds like more of that "internet != real life"* bushwah again. No, idiot, my friends don't live inside my computer, they live in other cities, and my computer is the most convenient way to talk to them all. There are people who live inside the computer. They're called The Sims. My friends are real people, not Sims. Heck, I don't even have a copy of The Sims.
And yes I know it's just a joke. 'Sjust not a funny one, 'sall.
* For the non-programmers: '!=' means 'is not equal to'.