[mwbajor]

As I said, nature is analog, it will never go away. Interesting areas of analog research are in things such as switched capacitor architectures where you can filter as close to the antenna as possible, reducing the impact of an interferer on the rest of your signal chain. Also similar is continuous time signal processing where you can perform your signal processing on an analog signal without discretizing it in time, effectively giving you the ability to make sense out of your analog data as close to the sensor (or antenna) as possible.

The problem is you can't tweak these things with a software update. Their relative inflexibility makes them unpopular outside of a defense or research setting but analog solutions are typically higher in performance than digital solutions but that can depend on definition as well.