I think the stage of life to consider would be when one moves on their own, plus couple years. That's when those early life lessons will come to test, not so much 30 years later. I just used my values as example, as it's not like they've changed much since I moved on my own, as I'm still renting, just in third location so far. Rent has gone higher for sure in that time, but the other bills are about the same.