It's very hard to find a life partner who is willing to live merely comfortably knowing they can draw more blood from you, and had to resign your children to mere comfort, knowing they'll have to compete for ever scarcer living-wage-paying jobs.
Merly comfortably? At 10 million dollars, you can live off of 4% of that for the rest of your life. After 15% cap gains, that gives you $340,000 to spend a year. Outside of the bay area, you can easily afford a 5000 square foot house in a top school district, own multiple cars, take lavish vacations, own a second vacation home, pay for your kids college education and more.
What additional benefits are you imagining in which having more money would not "resign your children to mere comfort"?
Ever meet old money? They manage it; that's how they pass their money on through the generations. If you're a tech dude in the Bay Area though, you have my sympathies: many predators.
