There are places delivery with drones makes a lot of sense and is the best way to do it. It depends what the most important metric is.

In an African country they are delivering medicin and bloodbaths with a drone plane to hospitals that need them for emergencys. That way they only need to have one central stock of these supply’s that can be quickly dispatched. Driving wouldn’t be an option that would take several hours over bad roads. Veritasium did a video about it.

For Amazon deliveries it makes no sense at all.