If you’re like me, then you rarely actually shut down your computer. Even though I have fast RAIDed SSDs that can cold-boot Windows in less than 20 seconds, I always have lots of tasks open at once to get my work done. It would be a severe pain to have to re-open all of my Excel spreadsheets, notes, graphic files, and web pages back to the state that I had them the day before, so I usually just put my PC to sleep.
Unfortunately, the default function of the Windows power button is to shut down the PC. Forcing Sleep mode requires a few extra button clicks. First you have to click on the arrow to the right of the “Shut Down” button and then select “Sleep”. That’s just a pain in the ass when I just want to walk away from my PC for a few hours without unnecessarily heating up my office.