It's very difficult to know what to write on hearing that 16 high altitude guides (they weren't all Sherpas) have been killed. These men are truly remarkable in terms of the work they do. They go up at the beginning of every season, fixing ropes, securing the passage through the notorious Khumbu icefall, and in so doing expose themselves to the Russian roulette of the seracs and tottering icefalls which lie above, not to mention the fragile snow bridges which lie below. Without the infrastructure which they have to build or reinstate year on year, many of the climbers who pay to ascend the mountain would struggle to get above base camp.
It must take great courage to repeatedly expose yourself to objective danger. I know that when I've done it, it messes with my mind.