One of the most difficult hurdles to overcome can be the assumption that a person is polyamorous because something is missing. Sometimes polyamory does offer an opportunity to satisfy an unmet need; we've both met poly people who are interested in BDSM but have a partner who isn't, or who have an asexual partner. But even in those situations, polyamory isn't a reflection on the deficiencies of the monogamous person; it's just a recognition of a difference.