I'm heading out to Florida today for a business trip. Florida in February is never a bad thing, but I do hate the travel part. In order to get decent direct flights, Philly was the only airport choice.
I have had awful experiences flying out of Philly, and also pleasant ones. One thing I always do is make sure I am at the airport VERY early. I think traveling is stressful enough without adding the extra stress of rushing and potentially being late. I don't mind sitting at my gate for 1 1/2 hours if I have to. In fact, the last flight I took out of Philly was on Southwest and it departed at 7:30am--I was through security and at the gate by 6:15. Plenty of time to enjoy a coffee and a soft pretzel for breakfast.