Me too! Just before I take my dog out to he backyard, I shut down my Mac
But, you have no start-up items (apps) open? That I find hard to believe
Lou
Correct. This has been such a longstanding issue for me that over the nearly year of el cap I have looked at startup items, done clean installs, start up then immediately shut down, ect.
In every scenario I will fairy consistently (not always, but most of the time - theres no ryhme or reason to it) will get an unusually long shut down. On the 2011 and earlier laptops the screen will even go black, making me think its shut down, but then I'll close the lid and see the glowing light on the front edge, meaning it went to sleep and never actually finished shut down. This happens on even friends macs with El Cap installed.... so I know its not just some voodoo that affects only my machines.
Again; its such a consistent and obvious bug that i cant believe Apple hasnt noticed it and/or fixed it yet.
But to me, its just another reflection of the much discussed half assed quality control Apple has had lately