Yeah, but the memory of it all is the reason why it is so good. Like for example, one of my favorite games of all time is Final Fantasy XIII-2 and Divinity Original Sin. I can't replay those games because I feel like they were an event in my life and re-playing them would just overwrite all the great memories.
The memory is wonderful - absolutely, and to be clear I don't think anyone is wanting to erase them - it's an expression of delight that the person is going to form their own special memories. As I said - I reckon you're just taking it too literally.