This reminds me of Futurama's coin operated self-termination booths. Maybe that'll be a profitable way to repurpose phone booths made obsolete by cell phones.

That said, if you want to leave this world, then why not go out in style? I'd want to skydive into Mount Erebus's lava lake without a parachute. It would be great for social media and you would have plenty of time to rethink your decision on the way there. https://en.wikipedia.org/wiki/Mount_Erebus?wprov=sfla1