I think you really have no idea how many games of your library actually have massive Pro support and how many of your games would run way worse on a normal one.
Just if I think about my library alone, almost every game I played in the last 9-10 months would I not have wanted to play on a normal PS4 after I saw the improvements.
Games like Horizon, Mass Effect Andromeda, Uncharted 4, Nier Automata, Edith Finch, Shadow of Mordor, The Division, Last Guardian, Hellblade, Crash Bandicoot, Elite Dangerous, Ratchet & Clank, Nioh, Kingdom Hearts, Diablo 3, Ark, Tekken 7, FFXV and many more and even games like Yakuza 0 who only uses the Boost mode (amazing feature) improves from the Pro. Sure, some of them only have have a 1080p upgrade from 900p, some of them only Super Sampling, but most of them run so much better and look so much better as on the standard console, I can't put in in words how happy I am that I own the Pro for these games after I saw several Digital Foundry comparison videos.
I still think this whole "Pro = 4K Console" is the wrong marketing and unfortunately, even most of the NeoGAF user still believes this marketing and that's bad. I can't believe so many people can't look behind it or just don't see for what this console really is in the first place.
Pro = better frame rate/stable frame rate, better textures, better performance. Higher resolution is not or at least should not be the main aspect in your head when you think about the Pro only because the marketing says so. This console is so much more and gives you even more many extra minor features like the Boost mode, 1080p streaming, 1080p remote play, 60 minute and 1080p recording and maybe even more that I don't remember now.
This is not simply a 4K PS4, it's a premium PS4 with many improvements in every little corner, for 4k user and 1080p user too.
The console is worth it just as much for 1080p users as for 4K users and it is a shame that the 4K aspect is the only thing that most people see when they talk about the PS4 pro.