An interesting thread was started in the Etsy community today, "To sign or not to sign?". I personally like it when someones creative work is signed. It is the one opportunity to let people know who you are by putting down your signature, it is your personal stamp.
Antiques are valued much higher when an item has a signature as well as jewelry. The items we create today will be tomorrows heirlooms and in 100 years someones treasured antique.
Sign it and be proud!