Someone said to me, 'home is where your stuff is'. That's all very well except if you find yourself constantly travelling from place to place and living out of a suitcase! For many people home is where their family is, but that concept rather changes when your family is either separated or old enough to become spread out all over the place. When I'd finished my first year of university I was talking about going home for the summer and was told by a friend 'no, you're leaving home for the summer. You'll be back home in September!'
Maybe home isn't a fixed thing, nor does it have to be a single place at any one time. I think home is where you feel safe and comfortable. In the words of Simon and Garfunkel:
"Home, where my thought's escaping
Home, where my music's playing
Home, where my love lies waiting silently for me"