We did not HAVE microwaves as young boomers.
We didn’t have remotes either.
It depends on when you are talking about, the phrase “latch key kids” had died out during the 50s and 60s and now is usually used to describe the 70s and 80s, microwave ovens were fairly common in the 70s.
I’m a boomer. We got our first microwave when I was about 8, so around 1970.
We were the first family that I remember having one.
My dad liked trying new gadgets.
“We did not HAVE microwaves as young boomers.”
Nor cellphones, no cable, no computers. We shoveled snow to make a buck, or did most anything else. If you wanted to buy something, you had to go earn it.