Hi Nekomonster,
My family moved when I was twelve.
To a different city.
Which was hard, because I actually did have friends in my old neighborhood.
I always look back on that old neighborhood with nostalgia,
thinking of how good it was.
Meanwhile,
yes, your house will feel less empty once you're all unpacked and moved in.
Yes, it will feel different, ... because it is different.
Yes, it's hard right now because your other relatives lived at the other home, too, and you miss it.
And yes, I think you'll eventually like your new home.
There is hope!
...