I disagreed with him on a political subject
That's one of the reasons I stay out of P&S. As much as I don't mind having a political discussion, it will lead to terrible disagreements that have nothing to do with a Bitcoin forum. I'm pretty sure there's a subject out there on which I can disagree with every single user on Bitcointalk. Just Google "controversial political topics", it instantly lists 18 topics. That gives 262144 different positions already, and there's countless more subjects out there. It's not worth it.