That`s right we often don`t make a good job of it , even though the world expects us to be perfect., Christianity is a very loose association of individuals who can interpret the Bible as they see fit. Somehow amazingly it works even though there is no pressure , or coercion , just a freely expressed fellowship of like minded people who can kind of recognise each other and understand each other in any society in the world, the main bond is a close relationship with Jesus.
Their stories are remarkably similar as well , Jesus came , set them free from things they didn`t like doing ( sin ) and blesses their lives every day.
The Spirit of God is the bond we all share , but we still have our humanity and failings .
The Fred Phelps chap that JoStories mentions quite often is obviously a nutcase who the non Christian media love to exploit , but he is not a legitimate example, amongst about a million Christian believers in the US.