sometimes, but it is much better all natural so no make up. girls usually feel ugly without it just because they are acustomed to wearing it I think, that the only reason, but your over reacting, wearing no make up is also better for yoru skin too and easier for you. beleive me, you do not need to be insecure about it, most guys prefer a girl without, its kinda like a way of knowing that your always with a girl that is being herself and is not trying to change into anything or anyone else.
It's a turn on for me when a girl doesn't wear makeup. However I do understand that some girls need it or how it helps girls look better. I don't mind makeup unless the girl looks like she smashed her face into a makeup kit in the morning. In that case it's hideous