What does "Neighbors" suggest about people's character?

Carver's "Neighbors" is a story about voyeurism:  the
natural, human tendency to want to live the lives of others and see how others live. 
The story doesn't suggest this is positive or negative, it just is, and a one-line
cliche certainly can't explain a Raymond Carver story. 

The
story doesn't make value judgments.  Given the opportunity to investigate the lives of
their neighbors, the husband and wife, but particularly the husband, since the "camera
on the wall" point of view follows only him, is aroused, sexually and otherwise.  The
idea is that, given the chance to do the same, in privacy, we are all like the husband
and wife in the story.  The story simply presents a kicked-up version of looking into
someone else's medicine cabinet.

In short, the story does
reveal elements of human character--we are all voyeurs, to an extent.  Remember, the
couple appears to be completely normal until they get into the neighbor's apartment. 
The story suggests that they are still being normal, even inside.