My great-grandpa promised we'd see the world when I turned 18. He died before we could, so I traveled for both of us.

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• I was 8 when my great-grandfather was in his 80s, and I visited him every Sunday.
• He always said that when I turned 18, we would travel the world together.
• As a kid, I held onto his promise and wanted to see the world by his side.

My great-grandfather and I didn't have much in common growing up. He was in his 80s, and I was just 8.