Have you ever burnt the toast? Did it set off the smoke alarm? Did you take the battery out of the smoke alarm to stop it making noise? Did you forget to put the battery back in the smoke alarm? Did you burn alive, having not been alerted to a fire by the smoke alarm that you took a battery out of?
Ok, ignore the last question, but the point is serious. Everytime I burn something, the battery comes straight out. And I forget to put it back in. I'm sure I'm not the only one, and there may have been cases of people dying because they'd taken the battery out. So why not provide a snooze feature that stops the noise for 5 minutes while you get the burnt-toast-smoke out of the kitchen window.