ive thought about this a lot too, i dont want to pass without my pets, but if youre doing SN it could be dangerous for them. an antiemetic will greatly reduce the chance of puking but after you pass out there's still a nonzero chance and dogs have a tendency to lick salty things, and, well, you get the picture. N might be something to consider if you can get it, its peaceful and the risk of vomiting is low.
and, while i do know that this forum isn't the place for preaching, your pets do care about you, and your passing will stress them out, even if they arent there to witness it. i dont know your situation, but its something to consider for anyone like us.
as for the second part, yeah, i really dont want to die alone. but everyone around me is getting better while i just keep getting worse lol. i dont trust people enough to CTB as a double with someone i dont know, though, so i am kinda frustrated with that. Obviously i dont want more people to CTB because to even get to this state is miserable, and its not something i really wish on anyone, but it feels lonely. Not being understood by anyone, and being dismissed and belittled by people who claim to understand, as if i haven't been like this for years already.
I hope that whatever happens with you, its peaceful and pleasant.