Joe, if "hard-wired" has any useful meaning at all, it can only mean "genetically determined or encoded."

That means no choice. Your body makes the decision, and every functioning individual in the species does the same thing under the same conditions. They need to breathe, eat, digest, etc. Nurture and external conditions have little effect on genetically determined activities.

There is very little in conscious human behavior that could be interpreted as hard-wired.