Preference for not using condoms and contextual factors were the top two reasons given for not using condoms, followed by a reasoned judgment based on risk assessment, relationship status and interpersonal communication. No major differences were found between men who reported non-condom use at last receptive and insertive anal intercourse. By contrast when meeting online, men were more likely to report reasons for non-condom use that corresponded to individual preference and mutual agreement not to use condoms.