I distrust my need to vent about a person. Every time I vent it leads to places that I do not want to be.
Either I feel validated and thus righteously angry. Or I feel misunderstood and thus vengefully angrier.
In all cases, to vent requires me to make that person a valid target for venting.
By making them wrong. And me right.
That requires me to delete so much context, and also-truths, that I do not feel I can ever get it back.