Should i upgrade from iPhone 4 to iPhone 5s?

Right now I have the iPhone 4 and my phone still works great so I haven't felt the need to upgrade. Is it worth it to upgrade to the iPhone 5s? For anyone who went from an iPhone 4 to 5s was it worth it? What are some good changes from the iPhone 4 and what are some bad ones? If I'm going to buy a new phone it will be another iPhone so don't comment recommending a different phone.

Added (1). I have already tried android phones and did not like them, so once again please do not comment with a different phone. I know what I like and I like iPhones more than every other phone I have tried.

YES!

Upgrade to Android i used to be an apple person but changing to Android it is the best thing i ever did

Yes. Get it. Why not? It will be a HUGE upgrade to the iPhone 4.
-It has a bogger sceen
-The processor is 4 times faster on the iPhone 5s
-the camera on the iPhone 5s is FABULOUS (look it up, you will je wowed)
-its new, so it will last you a while.

If you are insure about the iPhone 5s price or something, the iPhone 5c is still pretty awesome and a huge upgrade fom the iPhone 4

Watch this, maybe it will help.

If that link doesn't work, it called "Lamarr Wilson top 5 reasons to get an iPhone 5s" on youtube.

Nop.

Go android buddy, its faster and cheaper
Way better upgrade. I would also recommend the nexus 4 or 5

The Apple iPhone is a portable smartphone with built-in operating system, touch screen capabilities, camera, and a number of other features. IPhone 5 include new mapping and navigation features of its new iOS 6 that enables you to view clearly.