No idea if you answered this before, but why was keith thinking of the shack in episode 1?
My guess is,, it’s the same reason why he thought of it in BOM:
Whatever else everyone believes about Keith’s backstory, I think we can all agree that–to Keith–this is home. Even if his dad isn’t there waiting for him right now. Even if he returned there and spent a lonely year wondering the desert. Even if all his memories are tinged with regret or melancholy,, it was still his home.
For him, he has no place else.
At least,, until Team Voltron became his other home, of course