@Yen: you just can not, for the life of you, understand the ABC of this problem - HOW MANY LIVES AND/OR HUMAN WELL-BEING (= BAD HEALTH) WILL THIS COST, IF YOUR "UNDERSTANDING" BECOMES PUBLIC HEALTH POLICY?!? Behind the numbers are Human Beings, their lives, their health, their destinies and your "Public Health Policy" would adversely affect countless people! In fact, this is what is going on in most places!!! BUT IT DOESN'T HAVE TO BE LIKE THAT!!! As we can see quite clearly, from some of my posts!!! So, YOU ARE NOT "OBJECTIVE"!!!!