Why did they make the iPhone screen out of glass?

It seems like the stupidest design flaw ever. You only have to drop it once and its screwed! Phone makers realise phones get dropped really easily yet they make them out of easy to break material. They are just trying to make more money out of people right? Make people have to fork out for a new one all the time or the excess for a replacement. I don't have an iPhone but people keep telling me to get one. I don't doubt they are an awesome piece of kit but I can't get over that they are made of glass. Knowing my luck I'd drop it in the first week. Most of my friends who have iPhones are going about with broken screens from having dropped them and as they are students and can't afford to buy new or get a replacement. I had a iPod that I dropped out of my college locker and that smashed. Although it still worked I couldn't watch anything on it. I bought the case for it to prevent that from happening but there's nothing to protect the screen apart from a thin piece of sticky plastic and a lot of good that did. It kept coming un stuck, i'd keep finding the plastic loose in my pocket. I also cut my finger trying to use it. I was furious about it. I will never buy another one.

Maybe its not a design flaw. Maybe they built it intensionaly so that if you brake one you have to buy another one.