Can I pay for last-boarding/slow boarding? Not sure why people want to rush onto the plane that will land at the same time as everyone else. Other than the car

Can I pay for last-boarding/slow boarding? Not sure why people want to rush onto the plane that will land at the same time as everyone else. Other than the carryon issue, but, knocks wood, has always worked for me (Note I'm usually long-haul where not as many people try to avoid a checked bag, and sometimes I'm no carry-on, just a checked bag).