As a security engineer that regularly architects and helps implement new defense tactics that no LLM has trained on, I choose not to use LLMs at all, like a cave man.

Being differently trained and using different tools than almost everyone else I know in engineering my entire career has allowed me to find solutions and vulnerabilities others have missed time and time again. I exclusively use open source software I can always take apart, fully understand, and modify as I like. This inclination has served me well and is why I have the skillsets I do today.

If everyone is doing things one way, I instinctively want to explore all the other ways to train my own brain to continue to be adversarial and with a stamina to do hard experiments by hand when no tools exist to automate them yet.

Watching all my peers think more and more alike actually scares me, as they are all talking to the same LLMs. None for me, thanks.

"But this magic proprietary tool makes my job so much easier!!" has never been a compelling argument for me.