It sounds like you are saying children are like juicy grapes when seen from a distance, but are sour and disgusting up close. And then the last line is a bit o

It sounds like you are saying children are like juicy grapes when seen from a distance, but are sour and disgusting up close. And then the last line is a bit of a non-sequitur, particularly given that the fox was longing after that which was beyond it's reach.