The people I care most about are my mother and my aunt. Oh what the hell, my cats too since they're little ... cat-type-people...
When they're all gone, provided they go before I do, then there may not be anything keeping me here, but I know I would greatly miss the sights, smells, and feels that where I am has given me.
I don't think the UK could ever hope to grow an apple as good as Mercier Orchards in Blue Ridge, for instance... at least as good to me. I'd miss the sounds of the animals in the woods near my house at night. The crickets, the cicadas, the coyotes, the owls, the bobwhites and whip-or-wills. The smell of the hay and cattle from across the road at the Shield's pasture. Not to mention the sounds of them, and the bellows when one of them is having a calf.
The smell of oak and pine when the lumber mill up the road is doing its cutting. The woodsmoke when the neighbors up and down the road have lit their woodstoves and fireplaces.
There's a lot more than that even, but it'd take forever to relate and I don't want to bore anyone.
Home, to me... is more than just a place. It's everything you sense and remember.
Meh, I'm a sentimental fool, I know. :p