Politicians are very proud when they can say a proposed program is "paid for." But this only means they've identified their intended victims ahead of time. Naming who will be plundered does not justify plunder.
Loose monetary policy can get people to use idle resources. But this new economic activity will likely be in the service of bubble industries that don't create real wealth. Moreover, these bubbles create many idle resources of their own when the bust comes.
It is not true that a growing economy will lead to price inflation. A growing economy is an increasingly productive economy and leads to dollars chasing a larger number of goods and services — causing deflation.