well, with me, it was a symbiotic bond. i needed it to block glow-balls and to hold switches, and it needed me to haul it around, we were companions. now glados, being the ***** it is, made one of us die for the other to progress, now, since it can't fight back, there is no excuse that not burning it would be detrimental to your health, making the only reason selfish gain, to progress to the next room, and also destroying the companionship formed over the last 20 minutes.