We are not in control of what happens. No one is at the console pressing buttons. We are growing because millions of individuals are making individual decisions resulting in run away growth. The best we can do is alter the incentives and hope we did it well enough that those individual decisions change. Given that, sticking to a system where you know the population is growing at a rate where you cannot keep up by growing the supply of gold is locking yourself into deflationary currency. That is BAD for everyone in the system considering we want money moving not sitting idle.