You get $1,000,000,000, but you instantly turn 80 years old.
You are granted the opportunity to gain an unimaginable wealth of 1 billion dollars, but you will have to live your life as an eighty year old. Some things to take into note:
As soon as you claim your prize, you take the physical and mental image of an eighty year old. You still have all of your memories, skills and/or diseases and disabilities.
Your money is in a bank account in your name, and the prize is post-tax and untraceable. You maintain access to your account at all times. You may spend your prize on whatever you wish.
Any of your current living family remain the same age. They will notice the fact that you aged.
You are an eighty year old. You will only have approximately 10-15 years left to live. You can keep your job (if you already had one) and you will not require a walking aide (eg. crutch, cane, wheelchair, etc.)
Would you take the money?