There's a whole big thing with girls wearing make up to cover things up. Sometimes I understand covering things up like scars and other stuff that you just can't help.
But a lot of the time a girl will TOTALLY change what she looks like when she wears make up. So I joke with my friends saying "before you marry a girl, wash her face" because with some girls, you really don't know.
In my opinion, honesty is the best policy, and wearing make up is like wearing a push up bra, sooner or later, it's going to have to come off.
Also, a lot of guys are d***s, and when they see a girl without make up they can act out saying some stupid sh*t that would only make the girl feel insecure.
I like girls that don't wear to much make up or any at all because how can you see how beautiful a girl truly is if she's hiding behind a mask, and its definitely something guys notice when they look at a girl especially when they think she's attractive.
If you have gone this long without it, don't start!- Seriouslt make-up is for clowns and actors(KISS are awesome examples-Sadly I haven't seen them in person).
I know cerebrally I like no makeup, though there's a certain level of makeup that makes a face pop out and catch my eye in a social mixing scene. Though at a certain point in the relationship, I absolutely like no makeup. It's that point where I know I'm in love with her. (The most beatiful pics I have of my last love are the ones where she's not wearing any makeup.)