Is the purpose of the crybaby just to be a whammy bar using your feet and not your hands? or is there something im missing?
Its a wah pedal. It makes your guitar make a wah sound.
whammy bar and a wah-wah pedal are entirely different. Your whammy raises and lowers the pitch of the note where a wah is changing the signal and produces the wah effect on the notes you play
yes, there's something you're missing. a crybaby is a wah pedal, its basically a filter effect, it does not do anything to the pitch.