US Citizens can't leave. They must pay tribute to the United States globally and beyond until they die. Income earned in outer space is taxed as income earned in country.
Yeah, that's the price of retaining your American citizenship, which is among the most valuable in the world to have if you ever have a "I need to call my consulate" problem. But you don't have to retain your American citizenship--there are a lot of countries out there!
Granted, that's assuming you're a valuable enough contributor to society that you'll find another country interested in taking you, one that won't similarly have expectations around "people in a society should pay taxes", but that's a you problem.
It's not that tough. You just need another citizenship, $2_350 to pay the renouncement fee, and an appointment at a USA consulate/embassy to formally renounce. You also need to pay an exit tax if you have a net worth of $2 million+.
Granted, that's assuming you're a valuable enough contributor to society that you'll find another country interested in taking you, one that won't similarly have expectations around "people in a society should pay taxes", but that's a you problem.