If I lent you money at zero interest rate, you'd be careless with it.
If I even extended period of maturity or repayment at an arbitrarily far off period or perpetuity, you'd be even more careless.
And if I were to keep lending you these low-interest loans with long duration on a continuous basis rather than rarely, you would be extremely unlikely to economize use of this money.
So what is it in this world that can be called the continuous lending of a zero-interest loan with repayment at perpetuity?
How about taxes?