Where did you got that idea ? No sense in it.
All women are important in their own lives.so wanting a diamond ring has nothing to do with such a statement.
1.There's an unwritten rule between jewelry and women! Specially Diamond and women! Just like a direct connection to estrogen!!
2. It's a general practiced tradition across different cultures. I know it's pretty common across U.S.
3.It's also a symbol of a promise, respect and connection between couples. And the diamond ring would somehow represent the value that a man hold for his lady.
4.In the other hand, it's a gift, a gift that gives a pleasant feeling to the lady and the feeling of being special and beloved. So it's a happiness to start a relationship and marriage by it.
5.Not all women want it, not all women see it necessary, as well as being a tradition, it's an individual decision as well. In the same time, so many might not have the financial power to afford for a diamond ring and such a expensive ring wouldn't be a reason for some couples to stop for being together. Also some calls it being materialistic and don't care about it all! And they believe what counts is love, whether diamond be there or not! They're like, i don't care!