Or retire at 40-50 and live the good life doing all the things you didn't have time for when you were working, without being crippled like people working regula

Or retire at 40-50 and live the good life doing all the things you didn't have time for when you were working, without being crippled like people working regular jobs are when they retire. And have enough left over so your spouse can keep living comfortably after you're gone. Even if they were a SAHP and thus had a gap in their retirement savings. And have enough left over so your kids and grandkids can get a head start in society. It's not just about you in this very moment...