The only thing we are on Earth for

How would you finish the sentence “The only thing we are on Earth for is…”? What is the top-level meaning of life for a human? Is there an infinity of answers?

• Some answer “… to reproduce”. (e.g. Elon Musk’s 76-year-old dad says he’s had another child with his 35-year-old stepdaughter: ‘The only thing we are on Earth for is to reproduce’.)

• My personal answer is “… to praise God”