I can only upvote the above comments once but they're worth quoting again for all to see.Fast shutdown times encourage me to shut down when I'm not using it since it takes minimal time to start up and shutdown.
But when that process takes more time, the lazy approach is to just leave it in sleep mode, which leaves your Mac more vulnerable to data theft it is stolen while in sleep mode.
To those who lazily just put their Macs to sleep -- and, in their ignorance, BRAG about it -- educate yourself and do this google search:
mac vulnerable sleep shutdown filevault 2
Also, I'm on the road a lot and people forget that "sleep" consumes battery power. Throughout the day and between stops, the difference in powering off and rebooting is about 10-15% power savings for me (vs. sleep). And of course, you can't bootcamp into windows without restarting.
Is the bug a show stopper? Certainly not. But people actually excusing and defending it is... well, it's mind-boggling.