Turning 30

Now back to the sadness of turning 30.  "Oh, it's no big deal."
What is it really about turning 30 that really bothers me?  When I told Gram's friend last week about it, she laughed and said "poor you, ooooh, 30!  I feel bad for yoy (dripping with sarcasm).  But here I was next to tears.  Fine, you don't care and it didn't bother you and you're old dyke ass to turn 30, but for some reason, it bothers me!