Buffy: I told you. I’m a Vampire Slayer.
Joyce: Well, I just don’t accept that!
Buffy: Open your eyes, Mom. What do you think has been going on for the past two years? The fights, the weird occurrences. How many times have you washed blood out of my clothing, and you still haven’t figured it out?
Joyce: Well, it stops now!
Buffy: No, it doesn’t stop! It *never* stops! Do-do you think I chose to be like this? Do you have any idea how lonely it is, how dangerous? I would *love* to be upstairs watching TV or gossiping about boys or… God, even studying! But I have to save the world… again.
Buffy the Vampire Slayer – Season 2: Episode 22 – “Becoming (Part 2)”