Rebel8 asked, " So shooting someone is not foul play?"
In my opinion, if they are a consenting adult, it could be an act of mercy. I don't agree with the dogma that extended suffering refines the soul. We do not have souls, and we are not souls. We are made of meat and we are born, suffer, and die like meat. Suicide can be a rational way to cheat the reaper.
Dennis and Lucy probably realized that their religion had lied to them and tricked them into believing a fairy-tale. With no everlasting life in Paradise as restored vital young adults to look forward to, they were lefy staring at the unspeakable horror of disease and decrepitude laid out like a banquet-table before them.
"Eat your fill," ghod said to the banquet-table. The table snarled in silent reply.