1. Window blinds give you privacy
With window blinds, you are not only controlling how much sunlight you are letting inside your home, but you are also keeping strangers from seeing the interior of your rooms.
Window blinds provide you with a level of privacy that you cannot get from curtains. Because your otherwise bare window is covered with blinds, total strangers are kept from knowing what the inside of your home looks like, adding a little more safety and security into your private space.
If ultimate privacy is what you’re looking for, then it is best to install top-down shades.