A $3M exit at 30 can be more powerful than a $20M exit at 45. You get 15 extra years. 15 years to invest the money and watch it grow. 15 years to start another company as a "repeat founder". 15 years to screw up a few times and try again. 15 years not wasted in a startup that may never get there. 15 years to spend more time with your family and figure out what you actually WANT to work on. And you're not exactly starting over at zero... You've got money in the bank and you've already…