For glassware, try buying tempered glass. It's more resistant, but most importantly, when it breaks, it tends to break into cubes rather than into a million little sharp knives.
Bwahaha, I had a tempered measuring cup, a big one I used for pancake batter, stuff like that. One day I gently tapped it with a wooden spoon and it exploded. Pancake batter and (yep, not sharp) tiny pieces of glass everywhere! That was the day I learned tempered glass can store energy. It wasn't that one tap, but every thwack it ever received built up, until it could not store any more and it exploded. Very interesting to learn but very messy.
It's fine. No metallic taste since it's not a reactive metal. In the microwave you just have to make sure it doesn't contact the edge. You only get arcing of metal when there are sharp points or loops, which aren't present on a disc.