Why do programmers choose to write their own code instead of using code that is already available online?

Read also:

• Person with measles visited Boston hotel, museum, airport, health officials warn - NBC Boston
• Rune Factory: Guardians of Azuma Review - RPGFan
• Social Security is making payments of $2,000 on average on Wednesday, June 18: find out who gets a check - Diario AS
• What is the best AI ChatGPT or Copilot, Cursor, Grok?
• What is the best AI writing?
• What smell will you never forget?
• World fertility rates in 'unprecedented decline' - UN - BBC
• DNA from 9,000-year-old skeletons disproves migratory waves theory from South Africa - Earth.com
• People Are Sharing Things America Actually Gets Right, And It's Surprisingly Heartwarming To Read - BuzzFeed
• Massive ocean discovered 700 km beneath Earth’s surface shocks scientists - Glass Almanac
• Could humans be selectively bred, like dogs, to create 2 subspecies that can no longer have offspring? Do I not understand selective breeding properly? Im not worried about the moral implications, just the science please.
• Why are conservatives banning liberal books? Why are conservatives so offended by the teaching of racism and other topics?
• What's the most surprising connection you've discovered with someone you just met?
• Sed autem voluptatibus minima impedit officia ipsa.
• If all the American hundred millionaires and billionaires chipped in a modest 10% of their net worth to provide affordable housing to homeless families and other down and out persons, (like veterans), would this address the housing crisis?