You talk you as if you live on a deserted island disconnected from the rest of civilization
On the contrary, inflation of fiat destroys wealth. A non-inflationary currency preserves it.
Greece created its problem through overspending and monetization of debt. It was an incredibly stupid decision to enter into the EU knowing they would be unable to monetize their debt. One of these happened: a) They didn't realize they were spending more than their took in with taxes, b) They didn't realize they couldn't monetize their debt after joining the EU, or c) Those in power knew and wanted to use this to stop monetization of debt. The real answer is almost certainly (c), initiated by those who held large amount of currency and no longer wanted to support the masses with inflation of their holdings.