Brain eating amoebas

Bob! Did you forget to set the steam roller on park? My leg is kind of stuck, help me off will you? Ok we'll need a grinder, go turn that steam roller off dude it's rolling this way. The keys? Joe had the keys last? He's off today? Call Joe dude! C'mon!

Being slowly crushed from the feet up by a machine that no one has the ability to stop, while everyone looks on in horror.

Or, more realistically, anything that involves mental deterioration.

Cordyceps infection

Alzheimer's, Dementia, anything neurological I think.

Scaphism. Hand's down:

https://en.m.wikipedia.org/wiki/Scaphism

There is a certain cruel and unusual method of execution that I have some knowledge of. I remember it involving being force-fed honey and cream and then being left to rot in your own excrement.

I've seen enough people die of diseases to know that I don't want that. I'd rather be crushed to death or hit by a car or break my neck falling then having to suffer for months or years and know that death is coming.

Bobbit worm swarm

Hopefully not asphyxiation.

Any way whatsoever after my kids, including with the knowledge that they will expire shortly after me.

Fire.

Yeah no

Killed by family

Watching your friends and family go through it before you do would be the worst.