I know this is fantasy but I would pay off mine and families debt. Then I would try to make a difference truly helping others and building up some pimp rigs on the side with hydrogen cell motors so I do not worry about foreign oil and government interference.
Here is what you are looking at is almost 1.8m a month for 30 years. It will be hard to appreciate anything. Instead of worrying to have enough money to buy a happy meal, you could buy a franchaise in month and have money left over. I thought about this the other day and made a list and within 2 months I could do everything I wanted to do for myself and my family. But is fun to dream.