I saw this today http://www.andersoncooper.com/2012/01/06/woman-pays-50-000-to-clone-dog/comments/2/#comments. I would do this in a heartbeat. Maybe it's a little crazy but i totally understand why she would do it.
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I see your points. Cerebrally they make sense , but I have to tell you the heart is another story. If I would have known this was an option, I would have had tissue frozen to do it in the future. I would probably take out a second mortgage just to do it. I think sometimes your heart wants something so badly that no mater how much it doesn't make logical sense, you will do whatever it takes to have that even if it's just a close replica. Apparently a lot of people are upset that she spent this kind of money on a dog. But as we all know sometimes a dog isn't just a dog.