Do you have a method as to how to decide and by what means? Do you distinguish such thought from those of depressive suicide? Have you discussed the subject with a loved one?
Asphyxial Suicide with Helium and a Plastic Bag. Helium sounds quite nice. Thanks for the comment. [journals.lww.com]
Think of all the fun stuff you'll miss. Pain is a drag, but life is the only experience you have. You're welcome to DM me to tell me what's going on that prompts you to these thoughts.
Kudos to you for doing your research. I'd have said to use nitrogen. I've heard of people being overcome by CO2, laying in the fog from dry ice on Halloween.