Why do Cessna 172 SP aircraft tires have inter tubes?

I believe all Cessna single engine aircraft have tires with inter tubes. Why not tubeless tires?|||general aviation aircraft have split wheels, tubes must be used. The tube is placed in the tire when changing then the wheel half's are pushed into place then bolted together. Air or nitrogen is then used to bring the tire pressure to specification.|||The rims are not airtight.|||To better handle the impact from hard landings. Otherwise with just rims any impact would blow the tire.|||Probably cheaper and easier to fix if you have a blowout in a remote location.