You don't tell us much about yourself in your profile but I'm going to assume that you are not from an English-speaking country. That's great, we are a multi-cultural group and getting more so every day. The diversity makes for great learning experiences.
I must say that your thoughts about females in the specialty of urology are a little bit disturbing to me. You say that females can't be good urologists. That's a little like saying that males can't be good gynecologists or obstetricians. Just because we're not equipped the same way doesn't mean we can't gain the knowledge and have the instinctive empathy necessary to treat the other gender.
Personally speaking, if I had gone into human medicine as a profession, I would have chosen urology as a specialty. I love the male form and the way that your bodies function. I am fascinated by the fact that one organ (the penis) can carry on two such vital tasks. And certainly women can carry on a clinical discussion about the male form and function, we do it all the time here on the forum. We, as humans, can develop the skills necessary to treat the opposite sex, and women have always been graced with the ability to care for and heal.
Perhaps it's not common for a female to specialize in urology but I think it will become more frequent as medical schools graduate fewer and fewer students overall.
Just my thoughts,