While many people will be sympathetic to Bering’s argument that we need to focus on what’s harmful rather than what’s unnatural in sexual deviance, seeing it taken to its logical conclusion in this way is uncomfortable to say the least. “The fact that it makes us uncomfortable doesn’t make it morally wrong,” Bering insists when I bring this up with him. “I think we need to be aware of why we think this way. We can’t just stop at the fact that it makes us queasy – that’s not enough for a reasonable, rational person in the 21st century.”