Why isn’t everything we do instinctive? Logically speaking there’s no immediate benefit to pondering what you’ll have for dinner in the coming week, after all you’re not doing anything and next week you might have to change plans entirely. It makes little sense to stop and think about what you are going to instead of actually doing something on the spur of the moment.
If everything is made instinctual it will be quick and reactionary!
In many ways this could be translated as involuntary behavior. You rest your hand on the stove and OUCH! In a few milliseconds you’ve removed your hand avoiding a severe burn. Speed is the selling point here. If it were voluntary you’d notice your hand burning and feel the pain, then consider removing your hand and then finally remove it from the stove. Severe burn and an unusable hand. But hey! At least you made the best possible decision.
It’s not just physical either. You’re playing an online shooter, you see the enemy disappear from your line of sight. Suddenly you turn around and shoot them before they get the chance to take you by surprise. The optimal decision for that moment was made in an instant. In retrospect it was genius, perfectly calculated but didn’t feel like it at all.
On the other hand there’s no way to stop and reevaluate the actions you take...
While instinct is cool and can make you do quick optimal decisions in the blink of an eye, sometimes you regret acting too quickly. You reflexively quick the football but while doing so forget that you’re about to kick someone who tried to pick it up. All in all instincts are good but difficult to control.
How do you make everything instinctual?
Humans have a modern brain and a primal brain. Your modern brain (frontal cortex) is responsible for problem solving, memory, language, judgment, impulse control, and reasoning. Your primal brain (hindbrain and medulla) is responsible for survival, drive, and instinct. Animals have noticeably larger portions of their brains dedicated to instinct, because that’s what they need the most. Therefore for a human to be more instinctual the hindbrain needs to occupy a larger portion of the brain, possibly taking over other areas as well. This would make a very quick to act difficult to reason person.
In the end you need a balance between instinct and conscious choices, but being mostly instinct would definitely make someone a far better survivor and expert in physical activities.