I play my Famicom AV and OG NES in composite. I have RGB board, but no longer have the desire to actually have it installed. I just enjoy the composite lossy look too much and feel nostalgic towards it.
It’s irrational, I know, considering everything else I have is lossless. But NES just has that special place in my heart and I’d feel weird modding it at this point in my life. Part of it is due to the fact that it was my first system and kind of represents the simplest time of my life. But another is that the RGB values never feel quite the same as the YUV values.
NES composite colors are like the Wild West. They seem to change based on the CRT settings and there’s no correct look. So I like keeping it like that. It’s that “imprecise but who cares” looking console in my setup that reminds me to actually play the games rather than just tinker with them.
Someday, that may change and I may install it on a spare unit.