I like your marathon analogy. Not everyone can or does run a marathon, but there are still lots of marathoners. You do need stamina, but you don't need an inhum

I like your marathon analogy. Not everyone can or does run a marathon, but there are still lots of marathoners. You do need stamina, but you don't need an inhuman level of stamina like Bellard's. If you don't stress yourself and pick your enemy wisely (like, start with ES5) it is very much doable.