That said, it sounds like he's not looking for money for treatment, but for things like paying down the mortgage and car before his income is lost. This is what life insurance is meant to cover, but again, there's a wide range of coverage options and many people don't think about how much to buy, especially when they're young.
If you've just bought a house and a car and had a kid you're probably in a lot of recent debt, with the assumption that you'll have a lifetime to pay it down. All it takes is one bad accident to turn that assumption upside down. Get life insurance, folks.