THE COPYCAT THEORY
The strange phenomenon of the copycat is very well known in psychology. Usually it is criminal or abnormal psychologists who study it, but it has its roots as a behavior in everyday human experience. We love to imitate others, especially if we see them achieving some sort of status through their actions. We think that if we do the same things, we'll get the same rewards. Some behaviors become attractive for their riskiness or fringe quality, and copycat criminals try to do the deeds of their mentors just because it seems like a good idea. Maybe Amy Winehouse was just doing what Janis Joplin did, and wound up in the same situation with only one way out. Or maybe not - their deaths were judged to be accidental. That's a major flaw in this theory - how does it explain the involuntary deaths that have happened? Maybe there's simply some kind of pattern or path that these forever 27 club members got sucked into, and couldn't get out.
The arc of any given human being's life on average follows a similar trajectory. There is birth, early childhood, preteen, adolescence, young adult, mature adult, and old age - to simplify the stages of life somewhat. Every human goes through stages of development and comes out the other side ready for the next stage to begin. Perhaps the fame, wealth, attention, and praise that comes with such a meteoric rise causes arrested development issues, and the star cannot continue in an untenable and impossible situation. Of course, there are members of the club who didn't really achieve the heights of others, but it could still have something to do with the whole culture of rock and roll - the live fast, die young approach.
THE PRICE OF FAME
Still, many of those who met their death at 27 did become well-known enough to merit inclusion in the club - they weren't just ordinary people living normal lives. Being in the public eye, having some notoriety, being recognized on the street, all of this can have an effect on a person even if the fortune isn't really matching the fame. It is a commonplace idea that fame has its price, and that it exacts a huge cost from the unwitting star. Maybe at this age the pressures become too great and the cost can't be paid, so the universe miraculously conspires to end a life.
When all the possibilities are looked at and considered, it is hard to rationally accept any of them as being the one explanation for the forever 27 deaths that have happened. After all, there are many young stars who died in similarly tragic circumstances at other ages -it just happens to be true that a boatload of famous people died 27 years after the year of their birth. There is nothing occult or significant about the number 27, in fact the number 23 has many more strange qualities and connections. But the world and life somehow have created a mystery for us to think about and to keep us awake at night. Only the members of the forever 27 club know the answer for sure, and they aren't telling.