Why are a lot of people against feminism?

Yes. Feminism is very powerful and some men find that threatening. There is a certain standard of living to which they were taught and are accustomed. Feminism is so powerful because it's lead by powerful women just looking for equality. They're commanding, and demand respect. Some men just can't cope with the thought of not being on top, or not having an advantage in the financial department. I for one think feminism is great. All races are seen as equal, why not sexes?