We had a bad time the last time we went through Philly. The security people were almost universally rude and unpleasant and the whole operation just seemed like it was held together with chewing gum, by people who didn't want to be there. Very stressful getting to our connection on time.

I might ordinarily chalk this up to "just a bad day" but given the other replies, maybe it wasn't.

I'm not sure I would say I would never go through there again but if I have viable other choices, I will avoid it.