But then, at the office, they got some HP Elitedesk minis, which are very small - but use regular desktop CPUs - and I bought one for myself. Now the laptop spends most of its days in a drawer because the desktop is much beefier and just as portable.
Of course, there are use-cases that a computer requiring an external screen and AC to even work can't handle. That's why I would be much more interested in having a "big" laptop, as in powerful CPU, tons of RAM, glorious screen. Could even be tempted to throw in a dedicated GPU. Don't care about it being 1 cm thin, featherweight and all-day battery. I do care about it not spinning up its fans when I'm just running vim in a console. I don't mind lugging around 2-3 kg of copper if that means the CPU can do a lot of work in silence.
I have a friend who's moving much more around, in meetings, etc. Her old macbook air is perfect for what she does. Also, the latest and greatest AMD wouldn't make a difference for her job, but she would clearly hate to lug around a heavy, bulky beast.
I think the issue is that, with today's technology, there's clearly no one size fits all. And there seems to be a trend in laptops to optimize for size and battery-life. Luckily, there are people for whom this is the right compromise. Don't know if they're the majority, but clearly there are other use-cases for which choices are more limited.