Someone has to pay for the tax cuts for the billionaires and US corporations that pay little or often no income taxes and guess who that is? Charging fees is considered not a tax by the politicians and if you look at cuts to the national park service, US forest service, BLM, and state parks, look at who is saying we cannot pay to maintain our natural resources or our schools but can afford to spend more than $3 trillion dollars on wars for the owners of the big oil companies.
What goes around comes around - i.e. blowback takes many forms. Be happy you can afford an RV, afford to travel, afford to have pets. Many Americans are out of work, homeless, don't have enough food to eat, have to decide whether to buy food or electricity to run their AC. Get a little perspective and stop your whining.