i do not buy apple hardware and mac merely for the ppc inside; that is just an added bonus. it's a better chip and it is not mainstream. am i disappointed that the rumors are true? yes. do i wish apple had gone with AMD? yes. will i still buy macs after the switch to intel? yes....just won't be quite the same as some of the uniqueness is gone. the uniqueness i am referring to is that of the machine (hardware) and the os all together. but i am looking forward to a new system in a few years when i can afford it again and it will probably have an intel chip inside (hopefully 64 bit).
and i would not be so sure about the ability to run os x on an amd machine (depending on the validity of other rumors to that effect). but even if i could, i would still buy apple-made macs because of the design facter that comes with it.