“Death by Suburb,” a new book by David Goetz, is written as a wake-up call to Christians who have become defined by the size of their house, dress, car and megachurch. It’s a bell worth tolling, even if his vision of the suburbs is a little clichéd. And while his eight toxins of suburban life could apply to farmers and Donald Trump as much as any denizen of the ‘burbs, his “Eight Reasons to Know If the Suburbs Are Killing Your Soul” hits nicely on the dangers of spiritual complacency in the splendor of suburbia.