I say no to sex about 3 times a week. Being tired, having a headache, just not in the mood in general are usually reasons... It's not that I don't enjoy sex, I like it quite a LOT; but it doesn't mean I want to do it every day.
Also, as P'Gell aptly put it, Jenny (the Bloggess) is a satirist. Unless she warns you before the article that it's a serious matter, she's being funny. It's a given.
I mean, "Deforestation" "Spaghetti. Rhinoceros." "1/4" diameter dicks"??? Not a serious reason, which is fitting because Jenny's writing isn't serious.