The remaining blocks of addresses have been given to ISP's to distribute - we'll run out in September/November. Company's/websites etc. use static addresses so they will continue to operate regardless, most personal use is dynamic and shared already - with traffic defined by the routers subnetworks rather than the public IP.
We need IPv6 soon, definately, world IPv6 day is June the 8th I think in which a lot of major sites (google, facebook, youtube etc.) will be using the v6 protocol as a testing platform.
Yes we need it, but the world isn't going to collapse tomorrow:)
~IT Networking Professional