On my side I am quite happy that the hardware+software can support some kind of fast wake-up (similar to Macbooks and smartphones instead of needing >10 seconds to wake up when I open the lid). I just do a real shutdown when I don't need the laptop anymore.
And precisely : as it was said by someone else above, on modern computers with SSDs, I would rather disable "fast startup" so that the computer really shutdowns when I ask him to (which is also useful when you have dual-boot and your Linux systems wants to get r/w access to the NTFS partition)
But I admit that the computer could/should automatically enter in suspend-to-disk after being in "modern standby" for more than e.g. 5 minutes, and this should be configurable.