Because the normal reaction for gamers is to get the best thing in the game, whatever that best thing is. So if there is armor that is better than what we have now, we will try to get that. That is a normal behavior by most gamers.
Aaah, so its about it being a game, and a "gamer" approaches with a view of "beating the game", whereas a roleplaying game is defined more by the story. I have to disagree this is normal, because most gamers ADAPT to fit with the goals of the game.. and the goal of skyrim is not to 'beat it', and that should be obvious imo to any real gamer.
I'd hate to see you play the Sims, I can see you got the biggest house, and level 10 in your job, declared yourself the winner and uninstalled the game.
That might sound dismissive, but the fact is, like the Sims, Skyrim and a lot of games aren't there to reward you because you beat it, some games reward you for the journey.
This is why games like this are remain my favourite games. I can beat plenty games on hardest difficulty, but none satisfy me like an epic journey I can construct in a game like this.