To the OP, youur missing an option, None!. Love them all as characters, that being said I certainly have my favourites, but that has a lot to do with limited spots.
No, the option isn't missing. I'm sure there's a lot of people who won't kill off any companions. Indeed it wouldn't surprise me if that's the majority of players. I was curious about who becomes a corpse when turning companions into corpses is a thing though. I added the criteria of the choice being made based on what we know so far since act 1 isn't all there is to them. And also in some cases there are rewrites (much for Wyll, some for Gale) and I figure there might be more than one particularly annoying character. Finally I imagine people will do several playthroughs in which they make very different choices, meaning everyone or no one gets the axe, so I spesified "first playthrough" to prevent all boxes being ticked.
Otherwise I probably would've made the poll go "Are there any companions you're likely to kill off? 1. Yes, I'll kill... 2. No, I won't kill any of them 3. I'm undecided/don't know yet."
I'm not saying people shouldn't express their opinion if they want all the companions to live though. By all means, go ahead. It's just not part of the numbers I was interested in for the poll though.