No Leveling System in my Class A

I learned something today, I thought that leveling systems were standard equipment on class A coaches. With that said I use the leveling system in my winnie when camping mainly to ensure the Fridge keeps working (just replaced the cooling unit) but also to keep the winnie stable when folks come and go or the wind is blowing. I don't think I would spend the extra money to have levelers installed and would go with leveling blocks under the wheels.