Please stop misinterpereting that song!
"Who Says You Can't Go Home" is about coming back to your hometown, not finding a new one.
Good "Moving Away-Type" Songs include:
Take the Money and Run - Steve Miller Band
Fly Like an Eagle - Steve Miller Band
Free Bird - Lynyrd Skynyrd
We Gotta Get Out of This Place - Animals
Changes- David Bowie
Also look into: The Way- Fastball
"They made up their mind
And they started packing
They left before the sun came up that day
An exit to eternal summer slacking
But where were they going without ever
Knowing the way?
They drank up the wine
And they got to talking
They now had more important things to say
When the car broke down they started walking
Where were they going without even
Knowing the way?
Anyone can see the road that they walk on
Is paved with gold
It's always summer
They'll never get cold
They'll never get hungry
They'll never get old and grey
You can see their shadows wandering off somewhere
They won't make it home
But they don't really care
They wanted the highway
They're happier there today..."