Bored_on_the_Job – The reason why Noshim are Patur in Miztvos Aseh SheHazman Gramah is because they are supposed to be taking care of their children (or when the Husband tells his Isha to take care of the children so he can sleep, Al Pi the Abudraham). So it is true that is the reason, and it is true that Noshim get up.
Who knows how many years a person has on this world?