Many of us, including myself, often say yes to this theoretical question. But I think it'd be quite difficult to not simply walk out on the inevitable stressful and unnecessary workplace bull***t that we all previously handled and dealt with.
If you won that money at age 20, and died at age 100, that's still $125,000 a year, without any interest added in. Hell, you can live off just the interest of $10m pretty easily, even at just 1% interest. I think that's pretty well above a "moderate" lifestyle. Of course, our definitions of "moderate" might be different.
I think for me, a lot of it would go towards other causes once my family was taken care of.