Your maxxed-out HSA will not save you if cancer comes.
You're still gambling.
You're still gambling.
Cancer is either treatable or not. You either get cured or you die, and I don't care if I die broke. If it is curable I'll pay for it. If it is incurable, I'll go broke: so what?
That being said if I lived in Europe I'd have to hope that a football star is willing to auction his shoes to fund my trip to the US for treatment and I don't want that.
Generally, most of these cases where people are raising money to travel for treatment are about... dubious treatment which your insurance probably doesn't cover either. Evidence-based cancer treatment is of course available in Europe.