Not That Big A Difference

Maybe it's just my old eyes, but even though I have a 4K TV, a 4K Blu-ray player, and 4K capable streaming devices, I'm just not seeing a big enough difference in quality to warrant upgrading any of my older 2K Blu-ray discs. Can't see any difference in 2K/4K streaming either.

I CAN, however see a huge improvement between standard DVD and Blu-ray though.