Why do phones have to die?

Well, I'm in school, my best friend is at out, so I was listening to music to cheer myself up. Then, right in the middle of lunch, my phone battery died leaving me no music and no phone games to distract myself from school. Why do phones always seem to die when you need them? Well, I believe the answer is simple. I, in my infinite wisdom, forget to plug my phone in at night. But still. Fuck sake.