Well, most of my PS4 collection is constituted of remakes, remasters and ports, so I'd say YES. They are a very good thing for me.
I still have both my PS2 and PS3 hooked up to a huge CRT and a nice LED TV respectively, but nowadays, due to the overall comfort and ease of use the PS4 offers, I prefer play Crash Bandicoot 3, Shadow of the Colossus or Uncharted 2 on it than on any of those other older consoles...