i wear makeup almost every day. it started when i had bad skin and wore mineral foundation to cover it up, but now i put a light layer on every day partially out of force of habit.
i find that at the beginning of the day my skin is clear and i could do without makeup, but as the day (or night) goes on my skin can get blotchy, expecially if i'm drinking.
the minimum i usually wear is tinted moisturiser with blot powder, mascara, blush and a nude lippie. other times i go all out with primer, liquid foundation and 5 different colours of eyeshadow.