Do what you like to do, don't think about the existence of money, finish the year, and donate the leftover money. You can do this every year for the next 20 years, and consider yourself a noble offspring, eating and drinking for the rest of your life, and doing what you want to do.
But don't be too extravagant, even if you have a lot of money, you can't help sitting on it.
If you purely want to spend so much money, there's a great way to spend it: go to a Macau casino and splurge. Pretty soon you'll be broke.