What exactly is death?

How it feels losing someone you love? A friend of yours, or a relative? I didn't know until yesterday and believe me, it's a feeling full of pain. My grandfather died yesterday(as I said) at 10:00 am, really suddenly and without a sound. He was in the clinic. It happened like this:

 9:30

Doctor- Are you OK?

Grandfather- Yes

10:00

Doctor- He is dead!!!

Grandfather-------

 The funeral was today. It was my first one and believe there isn't anything worse than watchng your mother and grandma crying!!! 

Hope you are OK up there grandpa and remember I always loved you even though I did not show it to you sometimes....

Goodbye...