Sometimes it's nice just to snuggle up to your sister, give her face a good lick and then settle down, nose to nose.
I don't speak personally, mind you. I have no sister, which in many ways is a great grief to me. On the other hand, if I had had a sister (and she would of course have been the ideal sister, endlessly supportive of my views and understanding of my foibles) I'd have been very upset if she'd gone and lived elsewhere. (Cf my feelings about children.) I do have a brother and was sad when he left home, never to live in Edinburgh again, when I was 22.
I have no cousins either. I think my ideas about cousins were formed by much reading of Enid Blyton's "Famous Five" stories, which featured children (Julian, Dick, Anne and George) who were siblings / cousins. My fantasy cousins would have been about my age and very pleasant and funny and would have lived round the corner. And now, I suppose, they would have children and grandchildren and we would all be one big jolly family.
Actually, I suppose that life is complicated enough as it is. I'm happy to say that our three children and my brother's two get on very well, though they don't see one another all that often, since his two are in Cambridge and our three in Edinburgh, London and Perth. (Though Niece was at Daughter 2's for dinner tonight. Happy Birthday, Niece.) And by the time you factor in their significant others and, in due course, possibly more of the next generation, there will be quite a lot of us.
I'd still have liked that sister, though.