A random social experiment is happening on Twitter. Most women simply cannot understand the idea that most guys prefer the woman on the left over the one on the right.
It's pretty simple: makeup is a transparent young facade, so older women get mad when men point out that we value those who don't need it.
Makeup can make even the most average of women look like the ones on the right. She will never be able to produce the natural, modest and youthful beauty of those on the left. It upsets them a lot.