These are things you can do in the low six figures, not mid six figures. They are also things I wish everyone could be able to do.
Edit: The Math.
Retirement: Maxing a 401k and Roth Ira is $23,000/yr
Healthcare: Insurance for a family is about $600/month or $7,200/yr. Let's add another $500/yr in expected expenses and another $1000/yr in emergency savings. Total $8,700/yr
Saving for college: $200/month for 21 years (age when child pays last tuition) with 1% interest (pessimistic and safe long term view) will yield north of $50,00k, which is enough for state university tuition. Lets say we are saving for three children. $3,600k/yr.
Nice vacation: Nice doesn't have a specific meaning, but it's safe to say $10,000k is nice.
Total: $55,300k/yr. Considering how important these things are, it's within the reach of a household with a post tax income of $150,000 assuming average US cost of living. People with mid six figure post tax income can do much more. I really dislike these two paragraphs. It makes it seem like being a very high income household is the only way to provide the basic quality of life.