Let's use Tesla as an example. They say it will cost $0.50 per mile (That's revenue too, not final cost to user). My current cost per mile to drive my own car is less than that.
If I order a Robotaxi to grab me everywhere I go, I also got to attach and detach any carseats, booster seats, other books and tablets.
Kids leave stuff behind too. . . If I had to call up the old Robotaxi for every time a kid (or my wife) left something in the car, I would go crazy.
There will be wait times as nothing will run perfectly on time. But with my car everything just runs, but I have to do the maintenance and care.
Long story short, From a financial, family, and personaly enjoyment side of things. . . Yes! I will own my own car. But I would take a Robotaxi when I go downtown to avoid parking.