Kindo: I wish more people would turn the difficulty down if they're having trouble, rather than stubbornly going at it, again and again, before finally going on forums to complain about the game.
Playing the game on easy does not really help you when you bump it up to hard. The reason is you defeat the mobs on easy and learn bad techniques because those mobs don't block or use abilities. This reinforces the run in and bash them tactic which is what gets you killed on hard.
The key is to know that you basically follow a pattern of quen/block, hit once or twice and roll away to new position and repeat. On easy you kill the mobs much faster which means you pick up a bad habit of not rolling soon enough. And on easy you can charge in and start wacking the mobs since they won't parry you. But on hard you need to time it so not to hit a mob that is on defense.
My advice is to stict with normal and not go easy. But as others have pointed out the 1.2 patch really roned down the difficulty in the prologue so most should be able to do it now without too many issues.
SniperHf: BG1&2 "SPAM LEFT CLICK"
And what are you actually spamming in BG2 with your left clicks? Which spell and what party member? I agree with your other comments but in no way was BG ever a mash one button type of game. You had to put up defenses for your party, have someone cast spells to lower the defenses of the mobs while the tank grabbed aggro and the DPS guys could then attack. Finally the healer kept people alive.