These guys chose this work in spite of -- or perhaps because of -- the risks involved. If money were a large concern, he could have done quite nicely as an airline pilot, but chose to do what he enjoyed most. Life insurance is a lousy investement in any event; Consumer Reports recommends you only have term life insurance if you have kids to put through college, and get rid of even that as soon as they graduate.
"I may be synthetic but I'm not stupid"
Bishop, in "Aliens"