It's because they still print trillions for that. Now it does not cost them much but Printing is not scalable. World has limited resources and limited human capital. At some point European countries will become like Japan, with old native people. But it's not sustaniable in a competitive world economy. In Japan it barely work because they work in older ages and they have very low crime rate and immgration. No developed country is fully ready for this. They stared to increase retir. age but with not enough jobs that can't help at all. Some EU countries already have crazy debt/GDP ratio.Imagine in a decade? They know what is coming.