I was forced to use M mode for years, a separate hand held meter and all

Today I set ISO to what I think it should be and leave it there ... 100 ISO with my bridge cameras and 400 with MFT.
Aperture is set in A mode to the middle of the lens' range for similar reasons.
I can use M mode if I NEED it but I enjoy not using it when it is not needed, 99% of the time .... THANKYOU to the boffins and geeks who designed my camera

Anybody who uses M mode because they think it what the knowledgeable do is a deluded idiot IMO.