I agree with your sentiment, but historically your Grand-x father potentially got sold out in the Highland Clearances by his clan leader and then emigrated to Canada/US. This made way for sheep (lots of Scotland is still relatively underpopulated) and the head of the clan probably blew the money on a town-house in London.
People have roots, but they often get pulled out.
See John Prebble - the Highland Clearances 1963 - ISBN-13: 978-0140028379 "‘Mr Prebble tells a terrible story excellently. There is little need to search further to explain so much of the sadness and emptiness of the northern Highlands today’ The Times.