There might not be time later, and you'll regret it forever. There's even a song about it. People, yes, even good people, die young sometimes. A little girl in your sister's class gets cancer. A friend commits suicide, and your world turns to Hell on earth trying to figure out why, and what you could have done differently.
Life can get pretty weird sometimes.
Your parents split up. You never saw it coming. Your best friend gets a girl pregnant, and then pays for her to get an abortion. Your world feels like it's falling apart. Coping with the hurt and pain of life will be one of your most difficult challenges.