I am reminded of a mime skit I was involved in several years ago. 
There are several pairs of people - 2 of them arguing over musical styles, 2 of them arguing over modes of baptism, 2 of them arguing over ways of worshiping, 2 more arguing over evangelism and methods...
Finally, "Jesus" comes out and begins to wash the first persons' feet, who in turn washes the next one and on down the line it goes. 
When we stop arguing and begin serving each other the way Jesus taught us, and when we love each other THEN the world will know that we belong to Christ. 
Jesus came to seek, to save, to serve... We need to follow His example and stop the idiotic bickering.