..... maybe not merely just despise men, but also despise God's creativity and His concept of womanhood. For we Christians, there is much teaching and many anecdotes in the Bible that, taken together, describe what womanhood is.
It seems that some women want to be masculine rather than being feminine, thus seeming to despise their feminity. You'd have to analyse their character and upbringing to conclude why. (The reverse of this is of course, men wanting to be/being effeminate. God equally despises both outcomes.)
All these things taken together is why feminism is so confusing to we men, that have been brought up to be considerate of the emotional strengths but at times physical limitations of the gentler sex.