I think of it like this: Many people would "happily" spend 5 years in prison for a more than probable chance to get filthy rich. That's a superset with, I imagi

I think of it like this: Many people would "happily" spend 5 years in prison for a more than probable chance to get filthy rich. That's a superset with, I imagine, significantly greater cardinality than the set of those willing to spend 25. Obviously there is a sweet spot. For example, if you're okay with 60 years, than you're probably okay with 80. I'd imagine 20, give or take 5 years or so, is near that sweet spot, but that's just my gut feeling. Obviously statistics is key here, if there is any.