This acts to exclude priests from a certain portion of the typical Jewish greiving process, simply based on an accident of birth. The bottom line in my mind is that community roles that are based on accidents of birth are not exclusive to Judaism. No matter how liberal and pro-ERA I am, as a male I will never have the experience of giving birth to another life. As an average height male, I am at a distinct disadvantage when trying out for an NBA team. Conversion is not encouraged, and different rules apply to Jews versus non-Jews.
People have little choice but to accept biological determinism.
In my mind, a belief in a higher power and a religious structure, once accepted, is much the same as biology. My wife and daughter do. This is not an issue that I can argue given my belief system. Religious and biological pre-determinism are the same in my mind. I view all of them as simple realities that I must deal with on a daily basis.