Anonymous wrote: If OP made a paltry 3% a year on 7.3 million, you'd be pulling in almost $220,000/year without touching a lick of principal. Assuming no mortgage payment, that's more than enough to live a "very nice, comfortable lifestyle." Not enough to spend without caring, but that's somethign totally different.
Don't forget, $1M home equity and college savings are included in that lump sum. Unless they downsize they can't tap the equity, and college could be another $1M if, for example, they have four kids headed for the Ivy League. So could be more like 3% on $5.3-6.3M. Which is still a very respectable $159K/year on the lower end without touching the principle.
If it were me I wouldn't worry in the slightest. I won't have near that amount when I retire, and I expect to be very comfortable. But my expenses are low.