Its weird. Public transportation to many airports in the US is surprisingly inconvenient. This isn't true for some airports but true for many.
Not everyone lives in a town with an airport so many people have to travel 100 miles or more to the nearest airport which may not be possible to do via public transportation if you live in the countryside.
Not everyone lives in a town with an airport so many people have to travel 100 miles or more to the nearest airport which may not be possible to do via public transportation if you live in the countryside.