I moved from engineering to management in the past year, and it is much harder to do well than I understood. You have to deal with a lot of uncertainty, you have to be able to inspire and influence others, and failing to deliver has much more widely reaching consequences.

"Organizing the work of others" is no small task, and people who can really do it well are few and far between.

That's not to take anything away from engineers, but it is to say that good management is something you largely only notice when it's missing, and you need good management to create the environment where good engineers can do their work.