Often placing it sufficiently far away from the kitchen isn't possible. I have a fairly large—by NYC standards—apartment. Our smoke alarm is around 3 corners and 20 feet down the hallway, but it goes off LIKE CRAZY. Basically if the stove gets hot, it's going to go off. We have 11' ceilings, and nothing I can stand on in the apartment is tall enough for me to reach it. After waving towels at it and poking at the silence button with a broom handle ad nauseam, I borrowed a ladder and took it down before cooking a big dinner for guests. I know I should reinstall it, but the silence has been fantastic.

So yes, I think the Nest smoke alarm does have a major upside: people in my situation would actually use it.