There are two drawbacks of acrylic: it is more expensive than glass, and if exposed to a direct flame acrylic will melt and eventually burn.
Today acrylic is used more than ever. Virtually all major public aquariums now build display tanks out of acrylic. You will also find acrylic in malls, institutions, prisons, hospitals and commercial buildings. Acrylic just over one inch thick (32mm) is bullet resistant. The Presidential motorcade, the Pope's booth-vehicle, teller enclosures and drive-through window enclosures all feature bullet-resistant acrylic.
If upgrading the windows in your house, remodeling your bathroom, or adding a beautiful aquarium, consider acrylic. Acrylic may cost a little more than glass, but its sheer clarity, light weight and insulating properties make acrylic a superior choice for many applications.
