Other than the takeoff and landing, cars have to deal with those obstacles as well.
A computer running a citywide automated traffic system for cars would have all the same complexity, without the ability to separate traffic in three dimensions.
There are a whole lot less obstacles and unknowns in the air, as well as more planes (ha!) of separation available than a car.
When flying, you don’t really need to worry much about random pedestrians, for example.
If the entire system were completely automated, from the car all the way to ATC, and it’s essentially a taxi that you just tell what location to go to and it handles the rest… well that’s basically air traffic today minus the automated ATC part. (That isn’t to diminish pilots at all; just that I think it’d be a lot easier, in general, to replace a pilot than a taxi driver with automation. They’re both still extremely challenging problems.)
The last two words are not needed.
Rip the bandaid off. It was very nice getting rid of the toxic family I had when I was young. You don’t owe them anything.