Because you're worth it.
So. That Cupid guy with the arrows. Just who does he think he is causing all this trouble, then?
Unfortunately, as with many trouble-makers, no one is sure who Cupid is. Some say he came into existence before male and female were thought of, some say his mother was Venus.
As to who his father was, that's anyone's guess.
Léon Bazille Perrault's "Cupid's Arrows"
Even given that, Cupid's occasional habit of firing off his arrows blindfold is totally irresponsible.
As to the arrows Cupid fires, these also are a mystery. Some say he has two types of arrows, sharp ones which cause uncontrollable desire, and blunt ones which cause uncontrollable aversion. There's also a variation on this idea (possibly dreamt up by James I of Scotland, where Cupid has three sorts of arrows: the gold ones for causing a mild crush; the silver for a serious passion; and the steel for eternal love.
Even if you are currently not in Cupid's power, then there are things around called after him. The flower catanache is also called Cupid's dart:
(you're supposed to be able to make a love-potion from the flower)
and Cupid's bows are upper lips shaped like, er, Cupid's bow:
That's Clara Bow and her Cupid's bow on the left, there.
Even if you are currently free of Cupid's power, then are you truly free of cupidity? It's basically the same word, though the passion here is usually for possessions or money.
It strikes me that life would be easier if Cupid grew up.
Oh, but it would be so much duller, wouldn't it.
Word To Use Today: Cupid. This word comes from the Latin cupīdō, which means desire.