thats an interesting study and certainly proves me wrong
(from what i gather, the study was also done in north america, but i am from australia, so i was going off my observations here)
the reason i said what i said is because everyone i know LITERALLY puts smoking above anything else
example a: friend1 has health issues, despite continuous inflation of cigarettes, still smokes
example b: boyfriends mum: has a lump in her breast, has oedema in her legs, constantly tired etc (basically lots of health concerns she should be taking care of), she also works her ass off working security (does double shifts etc)... YET she still chooses to smoke despite all her health concerns and desperation to save money.
example c: friend2: basically the most laziest person you will ever meet. has a part time job, "tries" desperately to save money.. yet still smokes a packet a day, again, despite all the rising costs.
once a smoker always a smoker