Plastic? Paper? Or Glass??

I had this party when my college friends came over. It was until 1:30 in the morning. They were all in my hallway, so it was fine. The whole time we were disscussing which was better, Glass, Paper, or Plastic cups. I though that Plastic were the best, because you can reuse them over and over and over again if you wash them. Glass, break easliy and when they break, they can be VERY dangerous, and Paper, well, they can’t be reused, if you was them, they are no good anymore. Give me some ideas about what you think is the best.