That's why many of us relate so well to Andy. Down to earth and absolutely normal.
It is essential he has other interests, he would be a strange human being otherwise. Neither is it healthy for the mind or body to have no other interests. It must reduce stress levels too.
Rafa plays golf for instance. He actually doesnt post a lot on FB, and its mainly a sentence, links to articles and photos.
He has a substantial following of fans to nurture too. Without fans, (the paying public) where would tennis be?
This is hilarious because not so long ago Facebook, twitter didn't even exist and we had no problems supporting players like Pete Sampras and all the other players. I am sure it adds variety but it's definitely not a necessity. Because it causes a lot of distractions, our office for example, doesn't allow us to browse any of these social networks. A lot of people are in fact completely addicted to such things.
But this was just a suggestion not that Andy will read it and follow it with all his heart. Far from it I am sure. Not sure why some of you are getting so over protective about it.