According to Wikipedia....

According to Wikipedia, you share your birthday with about 18 million other people on this planet. And there's not one shred of evidence to suggest you have anything in common with any of them. 

Using age-based demographic segmentation models to try and predict who people are or what they are going to do is a kind of business astrology.

The truth is, what we value determines what we do. It's a core principle of sociology, psychology, and consumer behaviour. Entire fields of academic study continue to evolve from this basic idea.

So just imagine how influential you could be, and what a wonderful world we could build, if we used what people cared about as a guide, instead of the year they were born.  

Nobody acts their age anymore. The age of age is over.