You seem to be missing my point. Borrowed money implies you are borrowing it from someone with interest. By today's standards that is the banks and the federal reserve in the case of the US. The debt incured through QE will eventually drag the economy down once the cost of servicing the debt increases due to the rise of rates.

In the example of Canada's National Bank there was the situation where the government owned bank prints more funds and distributed it to all levels of governments, interest free, for infrastructure projects.

If you don't feel that the Saint Lawrence Seaway or the Grand Coulee Dam have not paid for themselves many time over then we must simply see economics very differently.