I know, however you follow a faith then you should follow it not just pick and choose. You do however have a choice, if you are muslim then you shouldn't have sex before marriage, which if you are breaking you are not a proper muslin anyway.
Yea but most people do not chose a faith. They end up having it chosen for them and by the time they really realise, its too late anyway.
I am a Christian for example yet I dont remember the point I ever chose that and if we had 'Christian laws' I'd probably fall foul of them...