Here it is Folks! Why FFVII is one of the BEST GAMES EVAA!!!

[Kasz216]

Riachu said:

Xen said:
Cait Sith is utterly useless, Yuffie is useful for material leveling though (good double growth weapon).

Neither has an effect on the story.

Would Yuffie and Cait Sith benefit from affecting the story?

If a character has no effect on the story, and offers nothing in terms of gameplay you've got to ask "why are they there."