@lcamtuf is analog electronics still relevant? Why teach students soldering?
There's the whole area of dealing with signals with high carrier frequency (compared with bandwidth), where it's not very practical to digitize the signal at least until you've frequency-shifted it. If you do any beamforming, you need to do it in analog realm too. Sometimes doing more in the analog realm lets one get away with e.g. 1-bit ADC.
There's the area of regulating power. While for most small applications you can find ready-made switching regulators, and rules of thumb regarding decoupling, understanding of the internals lets one realize e.g. what does it take to get the whole system to oscillate in a divergent fashion. Same understanding (and ability to do something atypical) also helps with energy efficiency.
(Note that there are scaling laws here: things that were once problematic on low frequencies on very long cables are very similar to problems that you get from high frequencies on very short cables. We don't necessarily deal with them in the same way, but the area of things that work badly is more similar than I'd expect before I realized that.)
