The title should say economic growth and not prosperity. You can have prosperity in a system whose objective is not infinite growth. https://www.youtube.com/watch?v=yPUogXUkr7I
You’re dying of incurable cancer. Do you have enough or do you want more economic growth so we can try and cure it?
If you're willing to die from stepping on a nail, then ok. I'm not.
And let’s ignore the US. For other countries with high life expectancy, how do you think they pay for it? By economic growth. Norway drills and sells a ton of oil.
Don’t kid yourself. People clicking on ads and buying new iPhones is the type of economic activities that pays for things like healthcare, welfare for the poor, etc.