My body, my choice. It's not about whether or not the substances are mind altering, or whether or not I am suicidal for a legitimate reason (unbearable pain, lack of quality of existence).

What needs to be done is to de criminalize these things. One of the primary causes of the expansion of police power has been the "War on Drugs".

"War on Nouns" is a stupid way to run a society. Using law enforcement as your first line intervention for mental health, substance use and other such problems is a stupid way to use your resources to provide for the common welfare.

Would you rather be on life support, incoherent, for years, because of the lack of a right to choose... Or be able to choose what quality of life below which you prefer to pass on and not endure constant indignity?

That seems to be a different problem from legalizing personal use of all drugs. Assisted suicide is a thing in countries with much stricter drug policies than "anything goes".

There's a world of difference between dying because your body can't sustain itself and euthanasia. Please don't unify the two.

The parent wasn’t advocating for the use of drugs, they were saying we shouldn’t lock people up for doing drugs. Do you think we should lock up drug addicts?