Well, so far this is the first time I have brought this up and not been brow beat for it.

I play PS1 and Saturn games in S-video because I like the colors better, and some games' texture mapping really shines in S-Video. Even on my old SDTV the number of full screen dithered PS1 games was obvious.
I also find it odd that everybody knows about the Saturn using dithered transparencies, which only show up as a moire effect in Composite, but relatively nobody seems to know how many PS1 games dither the whole screen.