Rabbit - here's where I stand on this. I think that religion and faith are deeply personal (raised Catholic, currently agnostic). While I don't hold to an organized religion, I don't begrudge people their personal faith... so long as that personal faith does not intrude upon the public sphere. Conservatives in statehouses across the country (and in Congress) are attempting to legislate via faith. Simply put, there is no religious lobby or atheistic lobby that has nearly the same level of impact on legislation in this country as Evangelical Christians have.
I also believe that diversity is important! Cultural and racial diversity is important - my experiences with law enforcement, obtaining housing, attending school - are very different than an African-American woman (for example). People govern from their own experience. When overwhelming majorities of the government are white and male, there is an important perspective that is missing. I'll also argue that socioeconomic diversity is also important. It wasn't until I was out of high school, and exposed to people from different socioeconomic backgrounds than my own that I started to even scratch the surface of some of the things I took for granted that keep people in poverty.
To get to equality, the people that pull the levers in society need to be able to understand the different experiences and problems of people across cultural, racial, and economic divides. We aren't even close to there yet...