Why don’t people in our society let other people know if they’re available ?

I never know if a woman is available . In Hawaii, if a woman wears a flower behind her left ear, she’s married or unavailable . If she wears a flower on the right side, she’s single and possibly looking for love . A 1944 article in Life magazine claimed that in Louisville, Kentucky, a “man – hater” wore a yellow ribbon in her hair, and a girl who wore a white ribbon in her hair is taken . In Dallas, Texas, a bow on the top of a girl’s head meant she wants a boyfriend . A girl who wore a bow worn in the back of her head wasn’t interested in men . A girl who wore a bow worn on the right side of her head was in love, and a girl who wore a bow worn on the left side of her head was going steady . I think people should wear name tags . If you’re married or otherwise taken, you’d have a red line on your name tag . If you’re single and available, you’d have a green line on your name tag . If you’re taken, you don’t like being approached, and if you’re available, you don’t like being left alone . Why don’t people in our society somehow let other people know if they’re available ?