There is nothing wrong with wanting pay for work, or seeking to maximize one's income, as long as one does not use means that are destructive.
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A hacker is someone who enjoys playful cleverness not necessarily with computers. The programmers in the old MIT free software community of the 60s and 70s referred to themselves as hackers. Around 1980 journalists who discovered the hacker community mistakenly took the term to mean security breaker.