I grew up without a microwave, (lol im barely 14 I sound like im 20) and now that we have a microwave it doesnt have a beeping thing, Just a light sound so am Luckyyy :D
I always put baby gates in front of my door because I have 2 cats that are always super energetic at night that would wake me up otherwise, so I kind of can't.
One time I snuck downstairs when my dad was on the computer because I heard warm milk helps you sleep. I I microwaved it with out him hearing because he has his headphones on