Originally posted by Luminatus
Because listening to them means denying everything it is to be human and young.
That's right. Yoda admits this near the end of the RotS novel. Good thing Luke did it right when he re-built the Order.
In "Fury" Ben Skywalker describes it perfectly. It's fine for Jedi to be in love with someone, have a relationship with them etc, just so long as you can survive losing them.
The PT Jedi failed because they took the 'no attachments' thing way too literally.