But we are talking about survival advantage and fur. Remember that evolution does not look for ultimates, but just good enough. While humans may well be able to run down most prey, particularly using teamwork, there is a converse, being able to out run predators.
It might well have been a happy compromise, but other species such as the hunting dogs, coyotes, wolves and such that do have hair also are known for long range hunts.
While we will likely never know for sure, I believe that the reality is more likely that humans ended up as they did because that was just good enough.
Anyone so limited that they can only spell a word one way is severely handicapped!