Low power allows you to pick up your target faster. Better for close range. Also allows you to shoot with both eyes open. Faster target acquisition. Red dot type "scopes" are great if you don't need magnification.
I used to think scopes were overrated, but then my brother in law and I got into a group of mulies as the light was failing -- he had a scope on his rifle and I didn't. He got his deer, but I couldn't see the front blade reliably enough to take the shot. I've been a scope hunter ever since.
Of course, after a few years of that mentality I hunted whitetails in the woods of Alabama. My son and I jumped three whitetail that exploded out of the brush to our right and bounded off to our left just a few yards away. I snapped my rifle up, but all I saw was tree branches.
There's no solution that works every time. Sometimes you need both.
First make sure your gun is safe, remove the bolt and clean your barrel from the chamber to the end of muzzle. Clean the barrel using butchers bore shine until a patch comes out white. Run a total of 5 separate patches soaked with denatured alcohol through the bore and let dry for 30 minutes. Insert a cleaning rod with a jag and a dry patch into the neck of the chamber. Make sure it will stay there through the next process. Now using another cleaning rod, install a patch that has been coated...