Quite aside from the legal problems, your survivors would have a lot of emotional issues to work through.
What if your widow/er has remarried in the meantime?
Since I plan to be cremated, reconstituting my body will be the first obstacle. 
Man, I should have asked at Yahoo Answers, there’d be less stupid remarks.
You should have looked in the Straight Dope Archives. The answer was already there.
getting a good photo for driver’s license
Mourning breath?
John 11, verse 38:
Jesus, once more deeply moved, came to the tomb of Lazarus. It was a cave with a stone laid across the entrance. “Take away the stone,” he said.
“But, Lord,” said Martha, the sister of the dead man, “by this time there is a bad odor, for he has been there four days.”
Then Jesus said, “Did I not tell you that if you believed, you would see the glory of God?”
So they took away the stone. Then Jesus looked up and said, “Father, I thank you that you have heard me. I knew that you always hear me, but I said this for the benefit of the people standing here, that they may believe that you sent me.”
When he had said this, Jesus called in a loud voice, “Lazarus, come out!”
And the dead man did come out, his hands and feet wrapped with strips of linen, and a cloth around his face.
And Lazarus did look upon his sister Martha and said, “Are those my sandals upon thy feet?”
And Martha was silent.