There are some things that just can't be replaced, this is one. When you are old, you will wish you still had it. And how much does it cost to keep?
Think about it, someday one of your great grand children will find it in the back corner of the garage covered up and will be stunned! Being the genius child that they are, they will secretly formulate fuel and whatever is needed to make the thing run again. They will then secretly roll the bike out and learn to handle it and one fine day will scream it down the highway. Once again there will be someone on the planet that will feel the freedom of riding! Then the police will catch them and subject them to the mandatory thought management training.
Oh well, good luck, I'd love to buy it just to have another one.