:s i'm confused now, Some christians can be like that, but very very few are, the ones that are have rejected christ and just say they are christian, unless they repent that is.
If those people have rejected Christ, they are not Christians, no matter what they call themselves.
Webster's dictionary defines the verb "reject" as:
1a. to refuse to accept, consider, submit to, take for some purpose, or use, 1b. to refuse to hear, receive, or admit.
In other words, forcefully refuse.
You can't call yourself a "Christian" but forcefully refuse to accept Christ.
The general 'steps' or 'process' to becoming a true Christian are:
1. Acknowledge that you are a sinner - to know that you can't do it by yourself and need help from God to 'come clean.'
2. Believe that Jesus is the Christ - believe that Jesus died on a cross to save you from your sin, something that you can't do by yourself.
3. Repent (turn away) from sin - live a Godly life, not a sinful one.
4. Be baptized (this is something that's not very well agreed on by different denominations of Christians... some think without it you are not 'saved', some think opposite, etc. This is a debate for another time. I personally believe that if someone turns to God and wants to be saved, for example they have some terminal illness, etc without being baptized that they WILL be saved, but however baptism is considered an act of obedience and is something that should be done by a true Christian).
God has also commanded Christians to assist in doing good things for his Kingdom, that is bring others to Him, etc.
One point that I want to make clear is that just going to church every week does NOT make you a Christian automatically. (I believe that standard practices that some denominations do, like baptism as a baby, confirmation, etc don't make you a Christian) You can't automatically be a Christian, you have to be willing to live it.
Anyway, back to your question Plymoth:
The amount of Christians like that are greater than you think... In God's eyes all sin is equal, and the punishment for sin is death (going to hell when you physically die). So the majority of Christians have problems with this.
(The bible mentions things that are done mentally can be sin, eg hate, lust, etc)
Hopefully that answers a lot of questions. If you have any other questions, feel free to ask!