Why did he keep acting given his condition?
Bruce Willis is said to be worth over $200 million so even if he was healthy, it wasn't like he in theory, needed to work so hard if he didn't have to.
https://www.celebritynetworth.com/richest-celebrities/actors/bruce-willis-net-worth/
He could've retired sooner and put a trust fund for 20 million for his 5 kids and still have 100 million left over.