The simplest response would be:
We were wired to survive OUTSIDE of our cushy modern environment.
Our cushy modern environment has been designed based on our wiring to survive.
Every single thing we are capable of learning, adapting, and performing comes from a mechanism that exists for a specific, practical purpose in the context of survival in the wild.
Also, every technology that we have ever developed has come from a desire (both conscious and unconscious) to improve the likelyhood of survival.
What comes to mind when you try to think of our modern world, as contrasting with our hunter-gatherer days?
Television?
Cars?
Video games?
Internet?
We developed ALL of these as a result of our natural conditioning towards survival.
Television, at its root cause for development, is as a medium for storytelling, and transmitting information. Our hunter-gatherer ancestors recognized storytelling and transmitting information (cave paintings, etc.) as invaluable methods to share information that could improve our odds of survival in future generations.
Cars are the end result of our old survival methods of traveling in search of food during changes of the seasons. If we did not have to travel long distances to survive, what desire would we have had to develop means of travel?
Video Games? Well, I'm sure this is a controversial comment, but I believe it to be absolutely true, and especially with the context of modern video games. We find acts of violence to be entertaining. We HAVE to, because if we didn't have that emotional and physical reaction to acts of violence (even simulated), we would not have been as capable hunters as we were.
Winning a swordfight against an evil spellcasting warlock, fragging a cyborg across the map with a railgun, or running over virtual gang members with a pickup truck is FUN to us, because our ancestors had to have a desire to chase and kill animals to survive.
Now, most of us humans have a natural reluctance to killing a fellow human (another survival mechanism), but since our enemies scurrying around on a PC screen don't register as 'human' to us, the same instincts we had when we were chasing antelope across the plains kicks in, and we find it enjoyable.
The internet was developed as a method of communication for people across the USA, and later across the entire planet. Our ancestors had developed communication because individually, humans were small and weak compared to certain other animals of that age. Banding together into communities was a natural method of survival, and that desire to communicate with fellow humans was pursued until now, where just about anyone on the face of the planet is just a mouse click away.
We're wired as SURVIVORS. And I think having some 'predator programming' was a very large part of that.