My computer is not always up, or connected to an open (even moderately) network. What's more, I sometimes have to delay for 2 days an update because it requires an update at the wrong time, if I didn't missed it... And that's without even speaking about the reliability of my internet connection - I don't want to try to reach even 3 9 on it. So yes I have a computer at home, but it's not a properly managed server, and I don't want it to become one !