So there's never a particular point that it "comes back to bite us" - if anything, the "bite" is happening already right now for all of us. Inflation is a form of taxation on currency. It's less like credit card debt and more like wage garnishing.
It's also worth pointing out that young people are less affected by inflation than old - retirees and people with savings. Inflation is good for people in debt. So it's not so much your children you have to worry about with today's debt level so much as it is yourself.