Many years ago Jeff Atwood wrote an article about how phones and tablets' big innovation was that they were "instant-on" devices that you could just tap and do something with at anytime.

Today my phone takes at least 60 seconds to be fully operational if it is turned off. My desktop just went from turned off from having a web browser operational in 20 seconds. But even if you count the phone in standby mode as "off" and you can turn it on by just unlocking it, it still takes 10+ seconds just to open the browser, then the time it takes for you to type something and the relative slownless of opening any webpage makes it worse than the desktop.