Degrowth

Cancer treatment is not that expensive depending on the cancer people actually have. It really depends on what people have, but in places like India treatment starts at $1000 and averages $6000 or so. In Indonesia 77% of people diagnosed with breast cancer survive the next five years for example.

Obviously a cancer diagnosis sucks and in many cases like lung cancer you very likely die soon(so do not smoke), with or without treatment. Even when you can afford it, it might be a good choice to avoid the pain of the treatment and just go for it. However the situation is not one of you get sick and you die even in poor countries.