There are tons fun things to do on your birthday even if you're an introvert, hate planning, don't drink, or just aren't into parties.
I love my birthday, but I'm not always into the whole planning a party thing.
It's a lot of work to find something that's fun, not too crazy expensive, and can be done relatively close to my day of birth. While I'm always thrilled to have an excuse to wrangle my friends and family together in honor of me, as I've gotten older, I've started looking for different ways to mark the day, whether it's with a group of people, or on my own.