Why choose intel?
1. better performance in just about everything
If you're willing to pay. Not everyone need the top performing CPU on the market.
2. lower power consumption
A very valid point, but irrelevant on the desktop area (unless you live somewhere where electricity is expensive, maybe?). Quite valid for laptops though.
3. more overclocking headroom
Really? You think that will make people choose Intel? 90+% of the people don't even know what overclocking is.
4. chipsets 'just work' and don't tend to have bizarre compatibility problems.
As do AMD's.
Sure, there's plenty of scenarios where Intel is a better choice. But there's plenty of others where AMD is the best choice.