I don't think it's about 'sense', Sssd, so much as expectation. I think the emotional payback of your estrangement from your siblings perhaps makes you worry about 'losing' your children.
I always expected my kids to move away. Why? Because I and all my four siblings did. Because my parents and their siblings did. Even because at least two and probably three of my grandparents did.
So to me the idea that one would stay in the area where one grew up was never an expectation. The expectation was that education and experience widened one's physical as well as mental horizons.
I guess we were brought up to expect to want to spread our wings. I certainly did and I don't think my parents thought it at all strange. I don't remember feeling any sadness when my kids went on their way further afield. I was just pleased they felt confident to set off on their own at nineteen, eighteen and seventeen respectively.
No empty nest syndrome for me, just more space soon filled up with mine and MrB's paraphernalia.
Emotionally we still stayed, and stay, close to our offspring while accepting the distance, both physical and mental, that their natural maturing naturally entails.
Success to your kids, Sssd! And I hope all goes well with you too. Allow time for this change to settle. Wishing you well.