SSDs have also been getting pretty fast, though. I don't have lots of RAM (but rather on the low side for present day), but hibernation takes maybe 15 seconds

SSDs have also been getting pretty fast, though. I don't have lots of RAM (but rather on the low side for present day), but hibernation takes maybe 15 seconds on a SATA SSD. Hibernation was definitely a lot slower 10 years ago on a desktop with less RAM and a slow spinning disk.