if you really want to talk about this seriously, we have to look at the question of whether being forgiven creates love and thankfulness (as christians profess), or creates a lack of responsibility leading to worse actions (as Nietzsche would profess.) Before anybody says that it must be the latter because christians are bad people too, we have to notice that some popular forms of christianity do not in fact offer forgiveness on a long term basis, but rather only offer more responsibility, and that is because some christian sects do not offer salvation for free but rather, your personal christian "race for the prize" can be lost or won by actions after conversion.
ALSO, most christian sects believe that you will in fact suffer for your sin,(even those that say god will not count your sin against you), so i don't think there is validity in saying cause and effect are lost, unless you are talking about Karma or Heaven only, and not cause and effect in this world. It isn't within normal sensibility to say, "God protect me from the physical consequence of my sin", although that prayer is being prayed all around the world right now as we speak, because not everyone is sensible.
ALSO, most christian sects believe that you will in fact suffer for your sin,(even those that say god will not count your sin against you), so i don't think there is validity in saying cause and effect are lost, unless you are talking about Karma or Heaven only, and not cause and effect in this world. It isn't within normal sensibility to say, "God protect me from the physical consequence of my sin", although that prayer is being prayed all around the world right now as we speak, because not everyone is sensible.