I will never buy a Microsoft laptop or tablet again unless there is a switch to really truly turn the damn thing off. My Surface Pro 4, which was only lightly used, had the battery degrade about as fast as you might expect from a very heavily used machine probably due to "shut down" not actually shutting down.
I'm sure someone has pointed this out already, but if you hit the Windows key and search for "lid" there's a setting that lets you make the machine hibernate when the lid is closed. Hibernate is different from sleep in that it moves all of the memory state to disk and actually turns the machine off. Assuming your laptop has an SSD you're not going to notice the extra restore time next time you open it.
