I am new to perfume as a hobby/obsession but old enough in years to have owned some of the great perfumes pre-IFRA. My thinking is that perfume artists will make great perfumes with the materials available. Will they be the same as the older perfumes? Probably not, but I can love my 2013 Comme des Garcons just as much as my 1986 L'Heure Bleue. I don't expect them to be made of the same materials just as I don't expect my car to be made of the same materials. I love loads of new perfumes.