Fair enough, but I still find the philosophy behind it repulsive. "Don't pay for it, just use the one that somebody else paid for". He follows the same idea wit

Fair enough, but I still find the philosophy behind it repulsive. "Don't pay for it, just use the one that somebody else paid for". He follows the same idea with cell phones, and with food (I've also interacted with him at bars after conferences and he hardly pays for his drinks either). If a friend of yours starts showing such behavior, you will quickly cut them off and think they are jerks. And rightfully so.