Time for the personal insults, eh? I really must be getting under your skin.

I bought my PC nearly five years ago at $500, and it still can play any current games.
It may
play the games, but does it have processing power equal to a xbone or PS4, capable of playing at the same resolution, physics accuracy, AI, detail level, etc.? I doubt it, seeing as an equivalent GPU (GTX 660Ti) would've been about $300 back then. Most people claiming it's possible to build an equal PC for less money leave out the Bluray drive, controller, OS, and/or use a cheap dual core CPU, leaving you with a fast GPU and little else.
Considering it's my work and play and all-purpose computer, I'm actually saving so much space by not owning either a PS4 or an Xbone. The only real point you have is the loss of physical media. Whoop-dee-f*ckin-doo.
That's great that that's what works for YOU and none of the other points matter to YOU, but not everyone wants to sit at a desk, suck down 500 watts, have a full tower case sitting in their living room, etc.
It should go without saying that the exclusives have to be good. If they're not even good, they're even less worth bothering about. If console X has no good exclusives and console Y has some good exclusives, then the natural choice to make is console Y, since you have the option of cross-platform games on both consoles. I don't know how you can't comprehend that point.
I do get that, but do YOU understand your original comment? Your point was that someone should choose a xbone or PC over a PS4, both of which have even
fewer exclusives, a trend that will surely continue based on the libraries of the PS2/PS3 and xbox/360.
The point is which to get. If you have the choice of getting an Xbone or a PS4, with all other factors equal, get the one with more and better exclusives. How the f*ck do you buy consoles? Flip a coin? Eeny meeny miny moe?
No, you were saying the PS4 is somehow redundant due to lack of exclusives. Do you not know the meaning of the word redundant? A PS4 simply
can't be redundant until after you've decided and purchased something else.
How did your brain so warp what I said? Did you flunk 4th grade comprehension? Maybe the "advanced math" is throwing you off?
Seriously, what part of this do you not understand?
Honestly, it's difficult to follow your meandering argument. First you say that exclusives are a key point to consider when comparing systems, but then you go on to say that 99% of the games are cross platform anyway, so one should base their decision solely on which system gets the better ports of the cross platform titles.