Why did Apple go the direction of programming for Intel processors in their computers anyway?
Although we could guess all day, the reason I recall stated was that there were limits to how fast you could push a G-series processor without incurring too much overheard. Motorola simply ran into a speed wall and could not increase speed without generating too much heat, or having massive cooling systems.
Like the other Allan (who also knows the correct spelling of "Allan"), I loved our many G-series Macs but the wedding dress started to fade when I bought my first Intel Mac, a MacBook Pro, in early 2008. Although I bought it for travel, it would do things my beloved G4 MDD tower could not, and ended up next to the tower on my workstation getting more routine use by the week.
I finally broke down last November and bought the 27-inch iMac I mentioned above. Love it! I kept the G4--it is the last model that can boot into OS9 and I have two OS9 programs on it that are critical to my creating technical drawings, so the g4 is now in the guest bedroom where I can use it when needed. Seems pretty slow when I come from the new imac, though!