marry a man who did not go thru it.. It is compulsary for men not just a Sunnah.. Ok I may not be a Shaikh or aalim but as far as I remember, there are 7 things which are related to personal hygiene and one of them is circumcision.. Besides that, all Muslim men and women are supposed to clean hair from underarms and private parts, cut their nails and keep them short.. There are few other things but I don't remember.. As I said, I am not that well informed about Islam as I would like to be.