Which is better: Nikon or Cannon?

It's a long going battle between me and my best friend. He swears by his Nikon. I love my Cannon.

What do you prefer? Cannon or Nikon?
Why?

Added (1). Whoops! Canon* … I should at least know how to spell it, huh?

Canon

Cannon is more popular. But nikon is also very good.nikon user here.

So I guess u two are a professional photographers that has so much passion for photography that they battle over who has the best camera, am I right? Let me guess you have Canon 1Ds Mark III and your friend has Nikon 3Dx.

I prefer Nikon when it comes to taking photos but I love Canon when taking videos.

Pentax