For me investing another 50k in a console just for the sake of 4k could never be justified when i already own a ps4 + keeping in mind that I will have to invest another 85 to 90k to buy a mid ranged 4k tv of a decent size.
Since, it took me quite a long time to save up for ps4 and a new 1080p tv so I think I am gonna stay away from 4k gaming on consoles for quite sometime.
And I second what @
Chandoo said, Although I dont own a ps4 pro but lately I have been reading about how TLoU has been misbehaving for 1080p owners playing on ps4. To me PS4 Pro has been quite a disappointment, it is something that exists in this world for all the wrong reasons.