1. Design and build quality. The prefix looks stylish and works quietly (especially if you have the latest revision CUH-1200). My computer is powerful, but no matter how powerful and not quiet, it emits heat and noise compared to a quiet set-top box, comfort is very significant.
2. Sony's exclusive line of games is very impressive, although it is losing such series as Metal Gear and Tekken. But there is still Final Fantasy, God of War, Yakuza, Uncharted, Infamous, Killzone, The Last of Us (more than sure there will be a second part), LittleBigPlanet, Ratchet & Clank, Tekken (one way or another it's hard for me to understand how in fighting games can be played sitting on a PC), Gran Turismo, Twisted Metal, King of Fighters and much more can be listed. We can also recall the Quantic Dream studio who released Beyond: Two Souls with Heavy Rain and are now working on a new game Detroit: Become Human.
Delicious solo les are coming out: Bloodborne, Until Dawn, The Order: 1886, Tearaway Unfolded and so on. Well, if you are a lover of everything Japanese and are friends with English, then a bottomless space of games appears for you. For example, I myself play the Gundam series, Deception, Sword art Online, Nights of Azure, Dead or Alive Xtreme, Odin Sphere and so on. I'm looking forward to God Eater 2: Rage Burst and Gravity Rush 2. I prefer to play many multi-platform games only on the console. These are FIFA|PES/Rocket League/Need For Speed/Tales of Zestiria/Tekken/WWE 2K/MK/NHL. Basically all platformers/arcades/fighting games/sports/racing and roleplaying/jrpg games in my understanding of the console genre. In general, as you can see, the games are full. It remains only to choose only what exactly you want to play.
3. The dual shock 4 gamepad feels soft and intuitive to hold in your hand. Moreover, it is synchronized with the PC. Gamepad speakers, tell me that before PS4 comes out and I'd smile, but in practice, when you play atmospheric games, you can't imagine gaming without speakers. It's nice to be able to plug in headphones.