Programmed or "P" mode is denigrated by many photographers but, can be a way to start with the closest to a viable combination of shutter speed and f/stop. Programmed is the way I put my camera to rest at the end of a shooting session. The reason for that choice is that if I have to pick up the camera in a hurry, the P selection will most likely give me a good start at a decent shutter speed and f/stop combination if I just have to grab and shoot.
At least with my Canon DSLR cameras, the Programmed exposure also lets me easily select both the shutter speed and the f/stop that I want/need.
Using "P", I can adjust my exposure through the entire spectrum of shutter speed and f/stops simply by rotating the top dial. I can adjust the exposure + or - by simply rotating the back dial.
I can do these adjustments while looking through the viewfinder.
Sure, I use manual at times, I use TV (Canon speak for shutter priority) at times and also use AV (aperture priority) at other times..
Having these various choices is like having a toolbox containing several hammers with which to drive a nail. Which choice I make is determined by the type of nail I am driving.
The only hammer I never use is the plastic one left over from my kid's toy box (full automatic).
BTW: With my 7D and 7DII cameras, I also have three user selected modes that I can choose with just a flip of the mode dial. I have these set in various combinations of exposure and focus, burst or not burst modes as well as AEB (auto exposure bracketing).

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But to me it's a bit more granular than that. To switch to a parallel universe, most of us could say that we drive a vehicle with a manual gearbox or automatic one. But talk to an old-timer and they will tell you that the gearbox we call 'manual' has a synchromesh capability that was not available in the original "crash boxes" where you had to adjust the revs pretty accurately or you ground your gears each time you changed - I've driven one or two and they are an adventure. Then there were the pre-select clutches in some sports cars that allowed you to anticipate a gear change and have it all lined up so when you pressed the button the change was significantly faster. Many modern cars offer fully automatic gear changing but with a separate control option to manually select which gears. These days one is posed with the choice of not only controlling the gear changes but the navigation and operation of the vehicle with the new self-driving capabilities coming on line. That would seem to indicate that there are degrees of automation and control that we balance between ourselves and the device. For me the critical thing is that I must have the capability to override the automatic functions of the device I am operating, if I choose to do so.
