piltdown
People must be happy with Ryanair or the company wouldnt be so big would it, and not all pax want to travel to the city centre, some are not like sheep and have a mind of their own, some want to see more of a country than just the city, lets not forget the people in these countries how live outside the city, secondry airports are convinient for alot of people just look at Stansted and Luton in this country.
There is always transport provided say for eg at CIA airport to take you to the city of Rome if thats where you want to go, and if you didnt know CIA is closer to ROME than FCO.
Ryanair do not hide the fact that they fly to secondery airports if you dont like it dont use it, there are plenty others that will.