I’ve purchased quite a few sex toys and acquiring glass (or metal) ones was one of my desires for quite some time. I’m very pleased with the purchase of my two glass dildos. Some of the reasons i like them so much are similar to those mentioned above:
They are very easy to clean like incredibly easy;
They don’t wear off like those silicone ones, making them especially durable without loosing their quality;
Although I’m not quite into temperature play I’ve found that I do enjoy the cold aspect to them and the natural temperature play as they heat up inside while going at it;
I do love knowing I can use any type of lube without any concern;
The fact that they don’t hold any smells is also one of the best reasons to choose them.
The general feeling it’s amazing and I do recommend it. For the ones concerned about the safety of its use I also shared that feeling for sometime but after a while the pleasure from it made me go pass it as it is an irrational fear after all. Personally I wouldn’t recommend to purchase only the ones that have “bumps” or other not smooth surfaces as the hardiness of it can be more rough than stimulating. Hope I’ve helped a bit.