> very little preparation or premeditation is required
Assuming that you already own a gun.
I do agree with what you said, but I don't believe that trying to limit the freedom of someone to kill themselves using a gun is the best solution.
The point is that there is at least one gun in 1/3 US households. So someone living in one of those households can have a passing thought of suicide, and then act on it irreversibly in a matter of minutes. You're welcome, I guess, to frame that in terms of limiting someone's freedom, but it doesn't have to be about the government taking away the guns; maybe there's just an argument there that having a gun in your house is unwise given the potential impact it could have on future you or your family members. An alcoholic doesn't keep beer in their fridge either, because the potential for self harm is too great.
Sure, and I'm there with you on that. However, gun suicide attempts are worse than most other means in the sense that very little preparation or premeditation is required— you can pull the trigger in an instant and there's no recovering from it.
Quoting a Vox piece from 2015: "There's a popular myth that suicidal people will find a way to kill themselves no matter what, and that closing off one method (like guns) will just lead to an increase in suicides through other methods (like hanging or overdoses). But most suicides aren't committed by determined people who can't be talked out of it. They're impulsive actions that can usually be prevented by small barriers. Many survivors say they deliberated less than a day, and sometimes for only a matter of minutes, before making a suicide attempt."
https://www.vox.com/2015/6/3/8721267/gun-suicide-gun-control