Fallen Cannabis Warrior
Glass doesn't burn, sweat, give a flavor, or impart any impurities into the smoke. It can be cleaned completely. Glass is naturally attractive and alluring to the eye, it is also more versatile in how it can be shaped and colored than perhaps any other medium. The translucency of glass I believe has always appealed to people in a kind of magical way. Especially so in pipes as it lets a smoker see the smoke, and, more importantly, stale smoke, one can then blow the stale smoke out of the pipe before taking a hit. Stale smoke tastes like raunch from hell, and will make you gag and hack in the most unpleasant of ways. The vast majority of smokers I know (well over 90% of them) would rather smoke out of glass than any other kind of pipe.