Why am I not excited about my birthday?

I'm 13 going on 14 in 8 days. I'm not having a party cuz my family can't really afford it this year cuz well, to much junk to tell you so I won't. Anyway, am I supposed to be excited or what cuz I'm not. My sisters just moved on there own and dont have alot of money, my brother Dan is in Australia and it cost to much to send anything even money, I'm not close to my brother Ryan, my other brother is in jail, and my brother Josh is 11 and has no money at all. idk if my grandma will get me anything and my parents can't afford what I want. It's gonna be a sucky b-day and I can't wait for it to be over. how can I be excited about my b-day?