World record alligator found in Alabama USA, then shot

I found this online earlier.  I suppose it's more meaningful if the animal is used completely - food, tools, leather, etc.   I'm not sure that's the case here.  This guy was the king of the river, a genetic masterpiece.  Just ... why?
http://www.al.com/outdoors/index.ssf/2014/08/new_state_record_potential_wor.html

 

According to WWF, evolution is keeping up and passing hunting pressure in some places.   Elephants more frequently lack tusks, bighorn sheep's horns aren't quite so ... big anymore.  We're weeding out the giants.   Natural selection and environmental pressure have always existed, but always tuning the animals for optimum survivability.   With external human influence this remains true - but survivability under what conditions?