I too would not like to go back to a manual gearbox. A few years ago I would never have considered an automatic, considering it took the fun out of driving. Now in my more mature years I have completely changed my opinion. The motoring world has changed and driving is not as relaxing, especially in built-up areas.
The hybrid system on Lexus cars is incredibly clever - it never fails to amaze me.
Battery to Wheels / Engine to Wheels / Engine to Battery / Wheels to Battery
Battery and Engine to Wheels! Just so clever.
I would have considered it almost impossible, back in the 1970's, to get 45 mpg out of a 2.5 litre engine!