Recently, I had a lesson focused on MIDI. I must admit up until a few years ago, I disliked MIDI because it meant synthesizers no longer needed to have keyboards. But as I got deeper into the electronic side of music/recording, I began to come around. MIDI can be a time and money saver; one could spend $2000-4000 on a hardware synth, or buy one or even a whole collection of soft synths for a fraction of that. Plus I never knew prior to reading this chapter that MIDI had applications beyond music making; you can control lighting (both show-related and in the home), traffic signals, and even space probes using MIDI protocols.
I get it; hardware instruments have a "realness" to them that cannot really be duplicated, and we don't necessarily want to spend all of our time connected to a computer. But look at it this way; the way people hear music most of the time in the modern world is via recordings. The vast majority of recordings are made digitally, with computers. So why not cut out the middleman?