Well, I do restart my SP3 every once in a while to clean things up, but I still put it to sleep when Im not using it to enjoy fast startup and Connected Standby functionalities. I think that's the vision of MS about Windows 8 (and XBOX) Theres a reason why Shut Down is located in Settings charm.I'll be honest. Basically I look at choosing to close the cover (when you aren't going to use the Surface for more than 10 or 20 minutes) or clicking on the icon at the top of the start page and shutting it down, a matter of whether you're lazy or not. As a matter of fact, I will go so far as to say that a lot of complaints I see in posts here are because a person is lazy when it comes to operating a computer:
(Yes, I do aware that a recent update put Shut Down back in start, but that's just a user-requested feature, instead of being part of a vision)