You constantly earn 3.3% interest on the net value of everything you own once per week up to a cap of a billion dollars, or you get superpowers

The interest is deposited into your account weekly, however the check cannot be more than one billion in any scenario - your lifespan is also increased by 1.6x. In the terms of superpowers, you essentially become a Viltrumite (super durability, super strength, super speed, flight), without the extended aging or the increased lifespan. What are you choosing?

The money has no downsides, no irs, no investigation, etc. The superpowers may have those downsides depending on how you think the world would react to them.