That comment made my night...
OP: I'll be as non bias as I can be.
Nintendo Pros:

• + Excellent 1st party support and highest rated games.
• + Games are ready to play and complete on release date with little to no patches (Hence the Nintendo Seal of Quality)
• + IPs are all REALLY diverse from each other
• + Games are usually worth more than priced value (Taking at least 15+ hours to complete not counting any side quests).
• + Provides a free internet service with game trailers in eShop and few to non server shut downs. Connection is pretty reliable for a free service.
• + Nostalgia
• + Innovators of new things and not afraid to fail.

Nintendo Cons:

• -Innovators of new things and not afraid to fail (can also be a con. Gamepad, Mini-Discs, and Virtual boy anyone?).
• -COMPETELY OUT OF TOUCH WITH VIDEO GAMING TODAY (I personally feel they still think it's the 80's, Iwata still probably uses a brick cell phone ).
• -Cockiness and complete mistreatment of 3rd parties (feeling they don't need them).
• -Weak to no 3rd Party support in their consoles (expect their Handhelds).
• -Disregards to how 3rd party games would run on their consoleS (Example of this is the GC Controller. AWESOME for Ninty games, but you ever tried playing CAPCOM VS SNK 2 on that thing? It's a effing chore! Same for their gamepad concept, they completely don't care how 3rd parties will make their games on their consoles, as long as they can make NINTY GAMES).
• - No answers to IPs that their rivals have (like Nintendo doesn't have an equivalent to COD, WRPGs etc.)

Sony Pros:

• Always have the latest technology on release date on their consoles
• Smooth, sleek, and sexy look to their consoles
• Great for 3rd Party games
• Vast Library of games
• Shop is really accessible and free online access.
• Stays in touch with what's up in gaming
• Trophies

Sony Cons:

• Can follow trends too damn much(Skullwalker brought up an interesting point here)
• Online serves are susceptible to hacker attacks and unstable. Also no trailers of games you sell on PSN?? Really?
• Sometimes having the latest technology REALLY BIT THEM IN THE ASS (PS VITA and the launch of the PS3 anyone?).
• Their main selling IPs all look the same (either 3rd person or FPS... BLAH BLAH BLAH).
• Since they can't control 3rd parties, 3rd parties can release a game thats like 70% complete and get away it.
• Shares the reputation of being a twin console (with more than enough good reasons).

Microsoft Pros:

• BEST FPS
• Xbox Live is WORTH THE DAMN $50 dollars. Blows all the other internet services out the water
• Adapts many PC gaming atributes into their Consoles
• Great for 3rd Party games
• Will admit to mistakes and fix them
• Trophies
• Vast Library of games

Microsoft Cons

• They are like a cancer to everything they buy or help out( Rareware and Sega anyone? They put Windows CE on the Dreamcast and later tried to buy Sega out). I hope this doesn't happen with Minecraft
• Really sneaky and tyrannical ways of doing business ( Knowing 30% of their X360 release stock would RROD and still release it anyway? Or having a camera and motion sensors always on in your living room? Or not being able to play used games??). o.O --- O.o
• Their main selling IPs all look the same (either 3rd person or FPS... BLAH BLAH BLAH).
• Since they can't control 3rd parties, 3rd parties can release a game thats like 70% complete and get away it.
• Shares the reputation of being a twin console (with more than enough good reasons).

Man this thread is an easy way to get modded lol

And you're still very bias :P

I can honestly say I have no bias whatsoever. I typically have primarily owned Sony platforms in the past, but that's mostly because most of my consoles have been gifts. I asked for a SNES, got a PS1, asked for a Gamecube, got a PS2. 2005/2006 generation, I bought my own shit and ended up with both PS3 and 360 at different points in time. This gen, my girlfriend bought my PS4, I'll probably also end up buying a Wii U in the future.

I bought a PSVita primarily to relive my nostalgia from some of my favourite PS2 games.

I don't give a flying fuck really about graphics or mode of input, so long as the games are competent and the games themselves feel right.

My pros n cons:

PS4 - pro - gets a lot of third party games. con - first party games released and coming up (excluding Uncharted 4) do not appeal.

WiiU - pro - lots of appealing first party games. con - not much of anything else

One - pro - great media support, certainly when I move in with my gf in the states, I'll get a one for the living room tv. con - not much retail support here in Hong Kong.

Only against MS. And I'm much better than I once was.

I'm a Nintendo fanboy, a Xbox fan and a Sony mehier.

I'm totally unbiased. I hate every platform equally for its flaws.

PS4, too weak and shitty controller.
X1 too weak and no games for me.
Handhelds, too weak and fucking tiny screen and awkward shape.
Mobile, no fucking analog stick, also fucking tiny screen.
PC, shitty ports and bad DS3 support.

Nintendo
+ My mom loves it and I love my mom
- Killed Sega

Sony
+ PSP greatest handheld emulation machine
- Killed Sega

M$
+ TV
- Killed Sega

Sega
+ Made me fanboy
- Killed Sega

This is my favorite comment. : ) So very true. And the MS one makes me lol.

All valid points...

Especially when it came to killing Sega...

A++++ response