The only real reason to grab a PS4 today is if you find one for and specifically want to play older exclusives (like Bloodborne or The Last of Us Part II ) on a extreme budget.
As consoles age, digital storefronts and online services eventually lose support. While the PS4 store is still active, we've already seen Sony attempt to close older stores (like the PS3/Vita). Buying a PS4 now means investing in an ecosystem that is in its "twilight" phase. The Verdict: Who Should Buy One? why not buy a ps4
The PS4 was a powerhouse in 2013, but it struggles with modern optimization. The only real reason to grab a PS4