128 bit addressing means 340,282,366,920,938,463,463,374,607,431,768,211,456 total addresses (assuming all of them can be used). That number is so large that it doesn't even mean anything
However, to attempt to put that into perspective, there are roughly 6,360,000,000 people alive on planet earth at this time. There are roughly 70,000,000,000,000,000,000,000 stars in the observable universe. If every single one of those stars had that many people living around it (and if I calculated correctly) each of those people would be able to have around 750,000 addresses under IPv6.
But anyway, the simple fact of the matter is, IPv6 will be replacing IPv4 at some point. That fact alone means that it must be supported in the future.
To prove that I'm not just making stuff up.. (though for all I know, they might be
)
World POPClock Astronomers count the stars 
