Don't need a mechanical safety IF you realize your BRAIN is your primary safety with ANY weapon.
Follow the three or four (depending on who put out the rules - military, NRA, firearms manufacturers, etc.) BASIC rules of safe weapons handling and there is virtually no way you can hurt yourself or anyone else.
Most of it is COMMON SENSE, like using a proper holster designed for the handgun you are carrying.
“Don’t need a mechanical safety IF you realize your BRAIN is your primary safety with ANY weapon.”
And if YOU had a brain you’d realize humans make mistakes, hence the term “safety”.