Thank you for the responses, and for trying to help. But this is ridiculous. Bluetooth stays active when my laptop is 'sleeping' (my bluetooth headphones always connect to my laptop while the lid is closed), and the laptop continues to drain to <5% if I don't plug it in before closing the lid. And it gets very hot when it's working away inside my laptop bag! I don't want to have to remember to turn on airplane mode or shut down the laptop completely every time I put it away. This could be achieved by a simple option in System Preferences, but of course, Apple does not want me to do this. They don't mind if my battery goes to **** after 1-2 years, and I go purchase a new laptop. As a power user who wants some control over my tech, this is infuriating.
Does anyone know of a 3rd party solution here? Until I find one, I guess I will try to remember to Shut Down each night.
PS: why is this support forum so cumbersome to navigate? The only way I have been able to find this thread again after posting it is by looking through my history. There is evidently no link to threads I have made on my profile.