Same here, cracked screen after short drop. Seems to be a common problem as reported across the web.
I have had iPhone 3GS & Galaxy S3 and they all survived higher drops without damage. The Nexus 5 (and 4) lack of survivability is ridiculous for a portable device.
Bottom line is - yes it is a great phone but it is NOT designed to survive daily wear and tear so I would not recommend anyone buying it.
There are a range of covers now on the market but unless you select one designed for tradesmen and the military, ie it becomes big and bulky, buy another phone.