They're beautiful, and some of the things that get done two them (flowers inside, swirls in the materials, colors) make them so utterly gorgeous that I want to display them on my shelf. Some of them are so utterly unique that you actually can!
I don't get turned on by watching people masturbate though, so I didn't think it would be fair for me to answer the second half of the poll. It's not a preference for or against glass dildos, it's more of a preference in what turns me on. Honestly, I just don't get turned on visually.