The Galaxy Note 2 is a Phablet device.
Tablets are computers to me, just in a easier to use form factor.
Alot of people forget that tablets have been around for years. Apple just took it to the next level. Same thing with Cell phones, they have been around for years, but the iPhone help push new designs and demands in the marketplace. The original "tablet" was introduced back in 2001/2002 by Microsoft OEM's. They were what they are today, except Apple has made them consumer friendly. The big cell phone with a Phablet device is like when all there was in the old days was desktop computers, then someone decided to make a laptop and they asked the same question you are asking, isn't the laptop just a smaller computer, why would you need it, and the answer to your questions is yes its just a big cell phone. I prefer a big Phablet, I have big hands, and like the real estate with a larger screen. I prefer to use my cell phone just to make calls, and Nokia Maps on my Lumia 920. I prefer to text/chat/skype on my Phablet.