“Fulfillment” in a developer’s programming tasks is not a valuable work product. Choosing whether to reinvent the wheel or not is ultimately a business decision that too many developers internalize.

If your product team and management team are blindsided by tech debt or liabilities that you add to the code base because you decided to quietly roll your own crypto (or any other OWASP vulnerability), you are substituting your short term enjoyment for the livelihoods of your coworkers.