I will admit that there are certain personality types that have a real hard time handling it. Even then, I usually recommend (again, if you're either trying to confirm an affair initially, or verify that agreed-upon no-contact is happening, mainly) that a betrayed spouse have a trusted third party that can directly see and hear the raw intel, and just keep you apprised of any potential threats in the form of a summary.
It CAN be addicting, and it CAN keep a betrayed spouse "stuck" from working on their own stuff -- focusing only on their spouse's affair instead of working to clean up their own side of the street, as it were.
But I'd much rather deal with reality -- and proceed accordingly -- then try to go by what someone who is wayward is going to tell me in their current addicted state.