Well you don't have to buy one if you don't want, it costy and not always worth it :p (though for otakus I say Sony is something you must have one way or another since more jap games are made for it)
I 'm not was super fan of consoles tbh, sure I like their games and really love them as a kid, but when I grew up I realized that they also were trick to let companies get control over us, most of the consoles games can work on pc just fine if they were made to, and these days we can use joysticks and televisions with our computer as well, not to mention that most of the consoles back at the day were anything But portable, the lack of mouse and keyboard effect your delay time in FPS (which is why the companies don't mix the pc servers with the console servers (they tried it once and saw how pc players just wipe console players out xD)), and they also slow down the graphics evolution since their games were made first for consoles and only then had poor port for pc,
It was all about money honestly, companies want to lock us in their own garden (OS) which don't let us do much unlike pc OS, that way they also ensure less piracy.
You could say that the only benefit they had at the time was that alol of their games need the same hardware, which let us save more money rather than buy new hardware for our pc each year, but it not really true for today as well, my old Gpu was 4 years old and still was kicking just fine
Luckly the last console generation finally start to use hardware that similar to pc, which made it easier for them to make stable ports, that why you see more pc ports lately.
