It's not really boot speed that's the issue, it's just that, like on my work Macbook, when I close my laptop's lid on Friday to catch the train, I expect:

1. The laptop to sleep

2. After some time, it'll hibernate so it doesn't drain the entire battery over the weekend

3. When I fire it up on monday, whatever I was working on is still there.

It's hard to do this without hibernate (or a _really_ efficient sleep).

You actually have to configure sleep-then-hibernate on systemd for this to work right. Again, I still think chromeOS is the future of the linux desktop (again, if you don't mind Google watching over).

Hibernate is usually used to allow the computer to shut down completely and not remain in standby, saving battery. It’s not about boot speed anymore.

My power on self-test takes an order of magnitude longer than the whole rest of the boot process... so I sleep or hibernate whenever I can.