Girls, why do you paint your nails red?

Whenever I see red nail polish, my first thought is that the woman is trying to color-match with their period blood. That thought alone makes me want to vomit just based on how disgusting the concept of periods is (excreting bad-smelling waste blood about once a month).

At this point, women are aware that men know about their periods and they do this anyway. I don't see why they put on bright red despite this and I don't see why some men actually like it.

Updates
7 mo
Here is some more insight into my actual thought process since my initial description wasn't that accurate:

If a woman has red nail polish, my first thought is that women have periods, and this woman is wearing red, so it immediately reminds me this woman has periods, which is obviously off putting since I don't want to associate the women I'm attracted to with periods (for the reasons I described above).
Girls, why do you paint your nails red?
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