I wonder why booting a computer may be a concern for a desktop user at all. With hibernation being polished enough (on Linux and elsewhere), one mostly puts a computer to sleep, then continues exactly where left.
Boot times may be important for cloud instances, though; the faster you can spawn more nodes to accommodate a load spike, the better. But cloud instances are usually pretty stripped-down, and often get spawned form pre-configured images where much of the discoverable stuff is hardcoded.
My rMBP is the first device that I have used yet that I feel boots quickly enough. I mean, it's a few seconds. And that's on top of the fact that I rarely actually turn it off. SSDs are really necessary to have tolerable boot times.
As another user of computers, it's pouring if I have to boot up more than one or two groups of things a week. If it ever takes more than 3 minutes, there's something wrong with the hardware.
Boot times may be important for cloud instances, though; the faster you can spawn more nodes to accommodate a load spike, the better. But cloud instances are usually pretty stripped-down, and often get spawned form pre-configured images where much of the discoverable stuff is hardcoded.