Why doesn't Win8 have a hibernate option?

Windows 8 By default, the Hibernate option cannot be selected directly and needs to be modified manually. The default selection
& ldquo; power & rdquo; and shortcuts & ldquo; Alt + F4 & rdquo; no sleep option menu, as shown in FIG


Procedure:
1, open Control panel, find power options;

2, then select “select the power button function>;

3, click “change the currently unavailable settings”;

4, put the "sleep" option on the hook;

5, select "ld"; power & rdquo; or "ld+F4", the sleep button has been displayed normally, then select the computer can already Normal sleep.