Why do other men falsely use the word "brother" when they do not know the person they are speaking to?

I find it offensive. I am black and find the term "brother" offensive and patronizing. I am a Republican. My family fought on both sides in the Civil War. I am a member of the NRA. I believe in the Death Penalty. I support the War in Afghanistan and being a War Veteran I support the Military. I support the War on Terrorism. I voted for Senator McCain in the last General Election. I believe in less Government intervention for U.S. Citizens. I support the economic cuts proposed by the Republicans. I believe that minorities, especially other Blacks must take advantage of building their own businesses and emulate the Koreans and Jews in their thrift and work ethic. I liked President Reagan, President George H.W.Bush and President George W.Bush. i support the FBI and CIA. I am against single-parent hood and having babies before marriage. I am against abortion. I see nothing wrong with a person flying the Confederate Flag(free speech). So, please don't call me a "brother" when you do not know me from Adam.