I see.I perfectly understand that. Maybe that's because you are familiar with the Christian point of view and not the Muslim one. Although we acknowledge the affect sins have on humanity as a whole, but we have no right to coerce others to follow our path, but we can pray for the safety and guidance of humanity, and we try to explain for humanity what God says, without having the urge to convert them for the sake of our own safety.
I think I'm used to the point of view expressed in the saying "your right to swing your arms around ends at the tip of my nose": basically, that the more your decisions affect me, the greater right I should have to control how you make those decisions. When I hear people say things like "_____ affects everyone", I expect it to be followed by something like "so everyone should have a say in _____."
Fair enough. I think I may have jumped to conclusions a bit there.I hope you got my earlier point to Penguin that we don't have that urge to convert people or stop them from committing sins. We don't have the right to control people lives and choices, but we try to do good to make some balance in this life. Note that, doing good is not something which can be done by Muslims, it can be done by non-Muslims too, but the affect of this goodness would benefit the non-Muslims and humanity as a whole in this earthly life, but not the after life.
EDIT: as a side note, as Muslims, we are ordered by God in the Quran to ask people to do good and avoid evil but we don't force them to do so.