Differientiate and define these gadgets and explain with features?

1.Iphone, smart phone, chinese smart phone or i phone. 2.ultrabook, notebook, i pad.

IPhone is the smartphone form Apple, and the product which launched the current "phase" of touch interactivity, both in what the hardware platform is, and with their app store model.
Smart Phone, quite generically is a computing device with cellular connection and network phone features. Chinese Smart Phones are ones that clone just the look and feel of the major phones, but lack the real guts or compatibility, even have a lesser build quality. Sometimes they blatantly copy major brand devices.

Ultrabook is a thin portable notebook, often without optical and HDD, with SSD only, usually with a full PC OS.

Notebook is a smaller laptop in the 13" to below 15" range, usually with HDD and ODD.

iPad is Apples full sized tablet device based on their iOS platform, started with the iPhone.

  • Why is gadgets are so addictive? I had my iphone last year. It is my first time to own a smartphone. It is even fun to have when all my friends had it too. I realized I spent to much of my times on smartphone for social network and whatsapp. I can't control myself. I tried not to online but failed somehow.
  • Why do some people try to show off their expensive gadgets? Like they always keep their iPhone on their hand or wear sunglasses and try to act cool and what not. In reality, they're just losers with no life. So why do people do this? Are they just really insecure?
  • Why do so many people go crazy for new gadgets and technology? Queue up for days just to be the first to get a new iPhone… Upgrading things when the old one works just fine… Why do people want the newest "in" thing so much? What's wrong with buying a phone and keeping it for 5 years until it breaks down and THEN replacing it?
  • Which is better of these 2 gadgets? Which is better performance wise, looks wise, and in generall everything. The iPod touch 5g or the iPhone 4/4s? I would like to know if I should get the iPod or save a bit harder and get the iPhone 4. I can't afford either of the new iPhones (5) so don't suggest that.