When you are wearing makeup you just feel better. the glow of that perfect highlighter. When your lips shine and pout just perfect. That shade of eyeshadow brings out the tone in your eyes that you're going for.
If you wake up every day and have to go out without makeup will you feel confident? Sometimes, but if you are addicted to it you would rather just stay home in your PJs then not be able to make your face a work of art.