Because of the reservation systems. It is almost impossible to get reservations for state parks for weekends anymore. Many are completely booked for every weekend within walking day after the reservation period opens. And then many sites sit open and unused because reservations are cancelled at the last minute. And campsites sit empty and unpaid for all week because only two days are booked and many travelers want a place to stay all week. It is no wonder that many state and COE campgrounds sit empty ty and losing money.