Useless you are just useless.
This could be even better than a classic insult...
When you're useless there are not much reasons to live... well sometimes useless things are expensive things and expensive things are so cute... for those that can buy or stole them...

but well this goes to every one perception.

Something or someone useless for me cold be useful for someone else!!

I’m sure that once in your life someone already told you so many time this…that once is your mother or your father…when you cuoldn’t do something very easy that they asked you for…

italian: inutile, non sai fare un cazzo

spanish: inutil

catalan: inútil but with accent in the u

portuguese: inútil

german: nutzlos