An automatic cover is a practical and essential investment because it meets both your maintenance and safety requirements. Whichever is your priority, you get to hit two birds with the same stone.
In terms of maintenance, a retractable swimming pool cover can be the most powerful equipment you have to protect the water from impurities. Given the public and outdoor location of a swimming pool (granted that you have such a dedicated covered space for your pool), your swimming pool is inevitably prone to impurities such as dust and dirt.
Having a cover to roll over the surface of your pool is the easiest trick to keep the water clean, instead of guarding it with a mesh that does not quite do the job, or hiring a professional cleaner to do it for you.
If you want to get rid of yourself from the task of taking out every dead leaf on the surface of the pool using a pool cleaner, having a cover that you can automatically roll over with just a push of a button is a huge time and energy saver.
As for your safety requirements, having a cover answers the big, pressing need for safety and caution. Covers address your need for safety because it can prohibit the use of the pool unless you have given your consent.
For parents with children in the house, having a pool is an effective deterrent and a form of control. If you want to be sure that you are present whenever your kids use the pool, be sure to have an automatic cover that only an adult can dismantle or remove from the surface.
Having this around is not a way to diffuse the fun, but to control the dangers inherent in owning a swimming pool.