Originally Posted by Quickdraw

Glass sex toys have quite a few interesting features.

Non-porous and ultra smooth so they are easier to clean than other dildos, use less lube, and the lube lasts longer. They definitely won't get that 'plastic' funk other materials can get.
Being super smooth they don't irritate the skin on the inside, yet they still 'caress' the muscles and nerves.

Some women are sensitive to other materials used to make dildos, Pyrex is hypoallergenic. They even use it for large gauge body piercings for those sensitive to other materials.

They are heavier than average, I don't think most people mind until you get into the bigger pieces of art.

They are hard, there is no give, so getting the right girth is very important. Bigger isn't always better with glass.

They retain their temperature for long periods of time.

Anyway, I like glass