Ever since the introduction of the Apple iPhone, there has been a huge public response to this product.  Millions of people are proclaiming the wonders and beauty of this cell phone, iPod, calendar and mobile Internet device.  However, the real question is, why do you need to have an iPhone?  Of course, it seems that it is a great product because it streamlines your electronic productivity and allows you to have many products wrapped up into one, but what are the real perks to having an iPhone?  The answer to this question really depends on who you ask.  However, there are many actual reasons why the iPhone is a great purchase.