When you’re just too big for this world.
In prehistoric times, there were megafauna like mammoths, and giant tigers.
They all died.
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Many species of megafauna still roam the earth. Elephants, for example.
Most megafauna live in environments suited to their size...
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But not human megafauna.
Nope.
As a human megafauna, the world is not built for you. You are too big for plane seats...
Cue arriving at the airport five hours before a flight to secure an exit row.