I think my despise of nicknames comes from one of mom's ex-boyfriend's who couldn't pronounce my full real name (which I love and think is quite beautiful BTW and yes I know that sounds stuck up) so he started calling me by my initials - A.J. - which stuck FOR YEARS. All the way through school, through highschool, when I got married, etc.
I finally had enough - and even though I've tried to get people to use my given name, it didn't happen - so 3 years ago when I joined BYC I told people my name was Aly - which is a shortened version of my name (not for Allyson) and so the new friends I made online, and later met in person, only new me as Aly. This is a name I chose, even though I'd rather use my full given name, but my thinking was it's the internet lol
Anyway, after 3 years of BeccaOh and her family and of keljonma and her husband and several other online friends calling me Aly around my other friends (and my husband and my kids, etc) I have successfully veered everyone away (or near everyone) from AJ. Almost NO ONE calls me that anymore - even my mom and Step dad have caught on FINALLY.
Now my Aunts and Uncles are catching on, and it may have taken awhile, but it's wonderful that my family is respecting my choice - inlaws, not so much, but oh well.

When my brother and his wife were home for my grandmothers funeral back in June, I even heard them correcting their daughters when they addressed me as Aunt A.J. - they said to their girls, "Call her Aunt Aly". I cried!
Ok so I'm a dork, and I know it.