You can have virtual game worlds (like a MMORPG) that can't ever be turned off, by nobody. That means your items will last forever. 50 years from now, your sword will still be on your backpack. Can't say that for company-hosted MMORPGs like World of Warcraft, because these companies might go bankrupt, close servers, update items, etc. Not a cure-the-cancer colonize-mars hype level, of course, but it is still an interesting neat thing you can do with blockchains.