You know what is my greatest fear?  Being stuck in a desert on a hot sunny day!
You are right, living conditions are really hostile in a desert. It would be dangerous. 
I don't know how people who live in deserts do it.  It's hot, there's a constant fear of dust storms and lack of water.
Yeah, it is also dangerous when it rains because it can create flash floods. 
Have you seen the situation where people sleep in camels when there are flash floods or sand storms?
I have never heard of people sleeping in camels, in Somalia flash occurs annually and cause causalties.
I've seen it a few times on TV.  It looks terribly uncomfortable.
Yeah, I must be,  there were camels in Americas, they became instinct when people came.