Keyplus, I couldn't disagree more. There might be valid logic in all teachings of Islam from your point of view, but I don't see much valid logic in it.
As for any belief making a positive change in the world and in society, I don't want other people's beliefs to influence my life in any way whatsoever, and I won't allow them to. Why should my free choice to reject your religion, or any other religion, bring anarchy to society? I'm a law-abiding citizen, with good moral values, and I don't harm anyone. I help my neighbours, I'm compassionate, I raise funds for good causes, I work for the community, I take care of my home and my husband, I have strict principles where children and their upbringing is concerned, so what can your religion teach me that I don't already know? It seems you think that anyone without religion is either a drug dealer, a prostitute, a drunkard, or is destined for some sort of life of debauchery or crime. Why should they be? There's no logic in that at all.