There are only about 3 reason to go AMD that I can think of.
1) You want to "donate" money to the corporate underdog perhaps in the hopes of helping to ensure a competitive market.
2) You want low initial cost, you have an app that can make use of MOAR COARS, and you don't care about power consumption.
3) You want a low initial cost all around PC that you don't want to ever put a real video card in, like a HTPC with a the ability to do some light gaming. AMD's APUs are pretty good for this sort of thing. Same goes for their laptop APUs so long as battery life isn't a critical issue.
However if you want the best performance, or care about power consumption or battery life, Intel rulz at the moment. Actually they have for some time now.
I do wish AMD was in a better spot but the truth is that they are behind and have been for a while. Nothing wrong with an AMD for general use if you can find one one cheap.