Beside this, should I shutdown my MacBook air every night?
There is no much need to shut down Macs every night anymore. It does not save a significant amount of electricity and by shutting down the computer you will prevent it from doing important tasks.
Furthermore, should I leave my MacBook Air plugged in all the time 2019? Apple does not recommend leaving your MacBook plugged in all the time. Furthermore, Apple even recommends charging and discharging your MacBook's battery at least once per month — it even has a calendar event to remind you. Restore Energy Saver defaults.
Likewise, people ask, is it bad to not shut down your Mac?
It's okay to just close the lid without harming your MacBook. Beside, it can run the maintenance script on time. The only time when you should consider shutting down is when you're not going to use the MacBook for more than 36 hours. Apple recommends to discharge the battery around ±50% before shutting them down.
What does shutting down your Mac do?
The main reason for letting your Mac sleep instead of shutting it down is that your Mac can't perform maintenance tasks during the night if you shut it down. macOS does a lot every night while your Mac isn't being used and it is “sleeping”. Apple actually has a term for this sleep mode — “Power Nap”.
