The European Central Bank is set to begin its bond-buying program on Monday. ECB president Mario Draghi said Europe's economy will improve, as will the eurozone's inflation, as a result. TheStreet's Jim Cramer says you have to understand that these bonds have no real return, it's just a last resort. And here's why Cramer says it matters to us: they are going to debase the euro to a level that he thinks is going to trade at parody to the dollar. The ECB will buy 60 billion euros a month in public and private bonds. The central bank also upped its growth forecast to 1.5 percent for 2015, up from 1 percent in December of last year. Its GDP is expected to expand by 1.9 percent in 2016.