As you see, this article title is focusing on scheduling, that's mean both of the tasks, i.e. Start Up and Shutdown, are done automatically by your Mac. What a save of energy.
I'm not forcing you to set up according to my opinion. I just want to let you know how this work on your Mac and what is the advantage and disadvantage.
This feature gives you advantages: time saving as you don't have to wait for start up time and energy saving as your Mac will shut down automatically even if you've gone to the dream world. Of course there is disadvantage: sometimes annoying: as it doesn't care whether you're using the computer or not, i.e. when you're in a rush for working deadline, suddenly your Mac automatically shutdown, what a nightmare..
Frankly say, that's just my opinion, if you've another point of view, feel free to reach me.
Some articles taken from our resource base, tightly related to current article, to empower you with more knowledge on tweaking the most out of your Mac.