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

Read also:

• Will Kamala Harris rekindle the business model of sleeping your way to the top?
• Why isn't bestiality illegal in most states? If children can't consent, then animals DEFINITELY can't consent. Why is being a pedophile a crime but zoophilia is not?
• What are the main issues that have historically and currently divided Republicans and Democrats?
• What exactly is the boundary men should follow while looking at girls so they don't call them perverts?
• 4.5 billion years ago, Jupiter was 2.5 times its current size, scientists discover. - Stewartville Star
• Has anyone who has been a victim of a narcissist made contact with the other victims of the narcissist? Did it help to confirm what you suspected about the narcissists?
• Why is it that women are stronger than men nowadays?
• A rare shark is seeking refuge in Miami's Biscayne Bay. Here's why scientists just spent 8 years tracking it - BBC Wildlife Magazine
• What factors contributed to Taiwan's economic success compared to Mainland China, despite their close proximity?
• What were Hitler’s habits?
• Simulation reveals emergence of jet from binary neutron star merger followed by black hole formation - Phys.org
• How was your JEE 2024 result like?
• What isइस संसार में पहले भागवान आया की इंसान?
• Why do almost all vertebrates have tails, but not apes and frogs?