1. Easier organization. Allows logical subnetting and more efficient routing.
2. It allows you to see subnetting. It makes managing IPv6 so much easier than IPv4.
3. It became "Internet Standard" last year, because the working group decided that it was about time to combine all the RFCs with the errata corrected in a single RFC. Just a formality.
As for traction... blame humans. If there's something better to replace the old thing, but the improvements aren't dramatic enough (e.g. saving tons of money) and the old thing still works, then a huge portion of lazy people won't switch.
2. It allows you to see subnetting. It makes managing IPv6 so much easier than IPv4.
3. It became "Internet Standard" last year, because the working group decided that it was about time to combine all the RFCs with the errata corrected in a single RFC. Just a formality.
As for traction... blame humans. If there's something better to replace the old thing, but the improvements aren't dramatic enough (e.g. saving tons of money) and the old thing still works, then a huge portion of lazy people won't switch.