[carlosjobim]

Well, just about everyone I know who uses Windows machines. The most common problem is that the laptop starts downloading and installing Windows updates as soon as it boots up. This hogs all of the CPU and all of the internet bandwidth. And there's no way for non-technical users to understand what's going on. They just say "Well, my computer is slow because it's old. Better go and buy a new one soon, what has the most RAM per dollar spent?" Because their techie friends told them that this is the only thing which matters on a computer.

Or there's a ton of pop-ups of every kind when they're using the machine. Most people just click the biggest button on any popup appearing, without even looking at what it says.

And these are people who work professionally with their computers, but they're not sysadmins or operating system experts.

I don't doubt what you say about Adobe Premiere playback speed. That might be an exception where more RAM does actually matter. But that's hardly a reason to dismiss the 8GB Macbooks. They are great for most users and most professional users.