I think I understand AMDs's decision. - Progress will move on.
All businesses that are successful make progress; and in the technology arena that means old is old.
That simply translates to consumers: 'Let's keep on progressing, folks'
AMD's new platform of CPUs is actually very impressive. But, understanding the platform and the updates coming to them is what should excite AMD enthusiasts.
The Phenom II and Athlon II discontinuation is unfortunate, and I sympathize. However, I wouldn't let go of hope as newegg.com's stock of these processors is actually first come first serve, and replenishment of older stocks sometimes actually returns!