< I do not believe that guns are the only resource for someone determined to commit suicide. >
But guns are the most efficient method for committing suicide and the weapon which facilitates "crimes of passion."  I am a firm supporter of better gun control laws -- the fact that we don't have them is a disgrace -- but I acknowledge that it would be difficult to devise a law that prevents crimes of passion. Still, two things that would help is universal background checks (which ought not even be controversial) and a waiting period.