As your years of experience advance the cost of the minutia portion of your day-to-day operations gets more and more expensive for the organization. Continuous deployment allows you to offset the cost and allows you to concentrate on your main function of developing code and product. When implemented properly it allows the decision-makers to perform the task of deploying or promoting to production without requiring the expensive developers just to babysit that operation. Clearly a Devops team would augment or perform the actual function for the promotion of the code.