Couldn't most of that be done by computer? Weight sensors in the wheels can determine weight and balance, the computer can evaluate the weather and plot the course taking into account all of the factors you noted, including refueling stops and emergency airfields, and it can even run through the checklist for you.
About the only part of that it can't do is the visual inspection.
Sure, if you trust the correctness of the computer's software with your life and the lives of any passengers. There are popular apps now that do some of what you suggest, especially trip planning.
I've seen enough bugs in my day job to want to at least verify the computer's work and have backup instruments, even if just my own senses. Aerospace software is known for relatively low bug counts[1] but also causing fatal crashes[2].
I trust my car controls to be correct and if they aren't I can brake to a stop if anything else seems off. (Unless of course the brakes stop working!) But since you have to take off to fly, you might not realize you can't control the plane until it's already at dangerous speeds.[3]
3: Amazing story about an airliner that took off not knowing its controls had been reversed (a maintenance mistake). Pilots declared "MAYDAY plane is completely uncontrollable we plan to ditch" but eventually figured out how to fly the reversed controls and landed it safely—super impressive. https://www.youtube.com/watch?v=kIc8Rr-cKd8
I think most of that is done automatically by computers in the case of airline jets. For single engine aircraft it's mostly DIY. Though with the jets the pilots get many hours of training on what to do if the various systems / computers go wrong.
Believe it or not, weight and balance calculations are not automatic even in the most advanced airliners. The airlines have algorithms they use which spit out numbers that are provided to the pilots, which they enter into the aircraft's computer. These numbers are vitally important, and on one flight I was on we had actually taken the runway but had to taxi back off because Delta was too slow at getting the numbers calculated.
About the only part of that it can't do is the visual inspection.