There's also something to be said for physically coming across old analog media and being reminded of its existence, sparked to revisit the memories kept in old home recordings or ancient photographs; I don't think there's any equivalent for digital data stored on some social media site. Digital data is perfect for our throwaway consumerist culture and I lament that this also applies to memories of our own lives.
But I like to sometimes browse it because a lot of those files are connected to memories. There are some music files on it, some pirated movies that a university friend copied on it. And those dirty xvid and wma files feels like they are really mine.