I got a little emotional when reading your story. I'm so happy for you, you have such great memories of your granddad, and at the same time I'm sad for you, you could not say goodbye to your granddad and an - for you - unsolved mystery is surrounding the departure (or cocooning) of your 'opa'. I for sure know, that when your 'opa' is around somewhere, he must be very pleased with you! And even if you 'opa' will not hatch in your lifetime, it are the memories that counts! They will be with you as long as you live! Just forget about the fact he is not in a physical human body anymore; He is with you in spirit!