I won't lie, I don't play games for difficulty or complex tactics. I want an escape that is more morally challenging and engrossing, than tactically difficult. So if I enter a dungeon or a difficult fight, I want it to be compact, have a point tied into the plot, and move the story on. Random encounters I don't include in this-they're just tools to engage with the combat and tactics, and to level your character. They serve a purpose for me that I'm happy with.
But unnecessarily long dungeons and difficult encounters? They're not what I play the game for. For me, the dungeons and encounters are a means to an end- a means to further the story.
That being said, having them in the game as an optional part for dedicated explorers and hardcore tacticians? I'd have no objection to that, because that would be content I don't have to experience, but that would be there to enhance the game for those that wish it. I just wanted to put my views across, as I know RPG's attract a very diverse selection of gamers, and it's therefore difficult to accommodate everyone's tastes 