Is AMD done? No. Is there ANY reason to buy an Athlon over a Core 2 right now? No.qftBut yeah, I honestly don't have anything personal against AMD, but when I'm recomending (or getting one myself) a PC for someone, I will be recomending parts that are the best. Currently for processors it's Intel, but in near future it might be AMD.
Really, do your research and buy what's best at the time. I'm running an Opteron 170, I like it, but I wouldn't build an AMD system today.