That said, the difficulty slider has a huge effect. My nearly non-combat theif dude struggled until I dropped it two notches. Combat still is hard, but challenging hard, not impossible hard
. There's no penalty for lowering the difficulty, so if you want to experience a character that doesn't have to whack everything (sniping with arrows rocks. Especially once you get the goodies from finishing the thieves guild quest) it's a good way to go about it. All skills can be maxed out eventually, and different ones do different stats. If you think your strength is lagging, whack something with a dagger or weak weapon for a while