Tamriel has some of the most beautiful sets of armor in the world, just as we saw in TES IV: Oblivion. And some sets of heavy armor can be accompanied by shields for a major boost! Especially for anyone who prefers prefer two-handed weapons.
So it’s fair to say heavy armor tends to be a warrior’s best friend. Heavy armor sets all seem to be tailor-made for players who don’t mind moving a bit slower in exchange for a massive defensive bonus.