This is a question I often asked before I became a believer. Why do so many Christians claim to be so only when it suits their needs. Though it has become quite a challenge as a Christian to call myself so. Not only must we defend ourselves and our religion against non-believers, antagonist. We must also defend ourselves and our religion against the Christian radicalist who take things a little too far with the protesting, and killing.
I believe it has come to the point where Christians cause the biggest division in the church. We have so many people who hold on to a few scriptures like its all there is. Then they try to project those onto others, sometimes unwillingly. Then one group interprets it totally different. No wonder non-believers laugh, and mock us. We cant even agree on the one book that is to save our lives.
I guess it doesnt really matter. I wont let division between others interfere with my walk. "Blessed are you when people insult you, persecute you..."