Sure, your ultrabook is sleek and portable. Until you actually need to use it for work. Then you're hauling around a laptop stand, external keyboard, mouse, USB hub, external drive, power bank, speakers, and what appears to be an external DVD drive because apparently we're living in 2005 again. At that point you might as well have bought a desktop and a wheelbarrow. The modern developer's "portable" setup: 2 pounds of laptop, 15 pounds of dongles and accessories.