Change my (818) area code to Colgate?

OMG!  I just had a Carrie Bradshaw from "Sex In The City" moment - "I'm just a 917 girl".  

My friends say I should change my California area code from (818) to a Colgate, Wisconsin phone number.  I travel and have moved around so much in the past fifteen years.  I'm back and forth from the west coast, east coast, midwest, the south, visiting family and friends all over our beautiful USA.  I've had my (818) area code phone number for more than fifteen years.  It's become part of who I am and I feel I belong to that number.  I can't give it, should I?