If your $600k house isn’t paid off yet, you don’t get to count its full value towards your net worth, so you might not be as close to $1m as you say. If it is fully paid off, then you shouldn’t have a mortgage to worry about.

But, 3 really bad months could mean a tree fell on your fully paid-off house. It could mean a family member without good health insurance has a medical emergency and you feel like you have to help pay.

It just seems to me that something like $10m makes John Rogers’ point much better. If this is a class war, $1 million dollar millionaires really are in the same class as anybody else who works. I don’t know quite where the dividing line is. Clearly billionaires are in a whole different class. Same with $100m-aires. $10m is almost certainly set for life. What about $3m? $2m? Maybe age comes into it. How long do you have to make it last, and can you still find a job if you need one? $1m net worth at 25 is different from $1m at 65. $1m at 90 probably puts you back in the “set for life” camp, just because “life” is not likely to last much longer.