Try making a complicated program in a visual programming language and you'll see why pretty quickly. My company used Azure ML Studio, which is a great program

Try making a complicated program in a visual programming language and you'll see why pretty quickly. My company used Azure ML Studio, which is a great program for making quick ML predictions. But making any kind of reasonably complicated data processing pipeline takes a lot of effort. I switched to writing code to process and run my predictions and my life became much simpler. Language is extremely expressive and you can pack a lot of meaning into a small space.