As I said, I'm a fan of hydrocarbon alkane analogues, not so much hydrogen or, as you suggest, ammonia.
Ammonia is useful as fertiliser. It's the 2nd most hazardous material noted in the US (I'd participated in an earlier thread pointeing this out), after the far more prevalent carbon monoxide. As a fuel, ammonia would prove an extraordinary hazard.
Ammonia is dangerously toxic if released indoors. Outside, NH3 is buoyant, rising away from leaks as fast as it evaporates. Besides its fertilizer and feedstock uses in the millions of tons annually, NH3 is already in heavy use as an industrial-scale refrigerant.
For those millions of tons of NH3 handled industrially, 1153 incidents is very small.
Ammonia is useful as fertiliser. It's the 2nd most hazardous material noted in the US (I'd participated in an earlier thread pointeing this out), after the far more prevalent carbon monoxide. As a fuel, ammonia would prove an extraordinary hazard.
Earlier thread: https://news.ycombinator.com/item?id=29211672