I don't know what all the fuss is about, I was born on the 7/7/77 and all through my life as soon as anyone learns that I get the comments that I must be lucky, what an unusual birthday etc. Never worried about it just smile and laugh along with them, its only an observation from someone trying to be interested in you for all of 5 minutes.
Now another thing is my last name is Gladwyn-Ball, apart from being told I must be loaded as I have a double barrelled name (unfortunately I am not) it used to get shortened to Ball when I was at School. Therefore, I was known as ball-less, ballbag, dirty balls and any other iteration all through my school life, irritating, yes, but nothing to get upset or angry about. It was just one of those things that happens as kids of all ages will find someway to take the mickey out of your name if they can.
Even my career in the RAF I was commonly known as Gladis (from the Gladwyn part) to the point that when my then girlfriend phoned for me once and asked for me by my first name the phone was handed to another guy sharing my name as no one actually knew what my first name was. The point is, there is no reason in getting offended by it, people show interest all the time, mainly to be nice and generally to people they like. Normally, if they don't like the look of you appearance wise or your attitude they won't waste time mentioning anything to you at all.
Just my opinion