The non pro iPhone 15 came in black and is made of aluminum. My iPhone 15 has held out fine and I’ve dropped it from waist height a few times , just using an Apple silicone case.I can see this being the reason there's no black this year. At the same time, they still went ahead with dark blue. So who knows. I'm sure durability won't be much better or worse than the regular iPhone, which never moved away from aluminum.