Only "a renter" is true. I have one kid. We have one family car instead of two. The three of us live in a one bedroom apartment. I carry no credit card debt, but I don't buy any toys. I paid off my college loans in the first two years out of college because I worked like a dog and lived with my parents.

Having children and/or other obligations makes it more likely you're living above your means.

It doesn't change the fact that if you're not putting money aside for emergencies & retirement you are living above your means.

Sometimes it's OK to live above your means. I'd willingly go into major debt for my children. But not acknowledging you're doing so while you're doing it will cause problems.