Agree with #4.
I have a Panasonic Lumix camera with 10 megapixels. It takes better pictures than my 16 megapixel Galaxy S5.
The difference: The Leica lens on the Panasonic.
Disagree with #8.
The most stress on electrical/electronic components is when you turn them on. As long as your computer is getting adequate cooling and ventilation, it will last longer left on. Think about when a light bulb almost always blows: When it’s turned on. You very seldom see one just go ‘poof’ when it’s been on for a while.
There's a reason the original, fixed-focus, point-and-shoot Yashica T-4 was carried by professional photographers as a personal camera, and a reason the camera became a cult camera.
There's a reason why photographers held exhibitions of photos they had taken with solely the Yashica T-4, an inexpensive plastic consumer camera.
There's a reason why you can sell the camera 20+ years later for more than its original purchase price.
The camera had a Carl Zeiss lens.