So, do you remember why you thought of poly relationships as so disgusting and horrific? I can understand not thinking they would work for you, but why the intense revulsion?

they don't present some life-altering crisis every time you realize you're really really attracted to someone else.

While I agree with you that polyamory is a great approach and works well for a lot of people, I'm not sure this is an accurate description of monogamy: most monogamous people find themselves really attracted to others at times, and just decide not to act on it (as poly people might do sometimes also, for other reasons).