Definitely the button, no doubt about it. I don't believe that money alone will solve all my (existential and personal) problems. Sure, money may make life easier, or find better options to CTB (or cope like most people do), but in the end, mortality and death is inevitable and I'd rather be in control of when, where, and how I go rather than let the elements, nature, illnesses, other people, and/or other factors dictate my fate.
Also, since I grew up in a middle class family, while I have my basic necessities met, I still do not find life enjoyable, tolerable on good days and on bad days, it is still shit. Therefore, non-sentience and death would be the ultimate solution and conclusion towards the problem of existence and suffering itself.