Is my life pathetic? please read below?

my friend's sister is having a drinking party right now-(beer pong, ice luge, flip cup etc.) and my friend wanted me to go but his sister didn't wanna be responsible. my friend and i are both 16 and he gets to go have fun with his sister who's in college and all of her college friends. i feel like everyone in my school is having the time of their life creating memories like this and im at home watching tv thinking this sh*t is never gonna happen to me. is it good im not at that party right now? o and his sister is only 19 but her boyfriend who is 21 bought all the liquor. so EVERYONE is underage but the boyfriend. -______-