theyre usually held in oppressive heat of summer and full of obnoxious younger people.
the best festival ive been to is sasquatch festival in the gorge washington state... in beautiful locale, good weather of may, out in a beautiful secluded natural setting, and the year i was there the lineup was killer (pavement, national, lcd soundsystem, mgmt, mountain goats, etc)....
im over most festivals now. when i want, ill see a specific act