Not only do you have a man for his sperm to thank for existing, you have every man that ever did anything important in history to thank for existing as well. The butterfly effect on history were they removed would result in world where you don't exist.
You should be thankful for men. Just like I'm thankful for women. My mother decided to birth me & not abort me. My aunts and grand mothers taught me well. Rosa Parks was awesome & many many more.
Men & women are equals & it makes you a sexist to only be for women. It is sad to see sexism still being a problem in some people.