We can't end female circumcision whilst male circumcision is still allowed.  Even if some westerners see a fundamental difference between the two, the people that cut girls don't.

Everyone should be able to decide for themselves whether or not they want parts of their genitals cut off.  It's their body, so it should be their decision.

Female and male circumcision are more comparable than some people think.  Firstly, in countries where female circumcision is done under unhygienic conditions, male circumcision is too (broken glass, no anaesthesia, etc). Many boys die each year in Africa from tribal circumcisions – over 100 young men died last year in just one province of South Africa.  In some countries though female circumcision only involves the removal of the clitoral hood - the anatomical equivalent of the foreskin - and is done to babies in sterile conditions, even with pain relief. Check out how it's done in Egypt, Malaysia or Brunei, for example. Circumcised women choose to have their daughters circumcised, citing how it's cleaner, good sexually, reduces secretions and smegma and is generally hygienic, and also mentioning studies showing circumcised women have lower infection rates. Basically the same reasons that people use to defend male circumcision.  It's just a cultural difference.