Too many players seem to lack understanding when it comes to the psychology of nostalgia.
I remember getting a Sega Megadrive (Genesis for you americans) for my birthday and playing EA Hockey on it - the game was amazing! 10 years later I found it on an emulator and it was still great fun. I played Neverwinter Nights upon release and it was so amazing... but I tried it 2 years ago and it was so much worse, I tried to get my GF to play it for the first time and all she could say was "wow the graphics are horrible" to the point she couldn't last more than 5 minutes.
Trying to recapture a feeling from your youth is impossible - you can still enjoy revisiting the era, playing the same game from then, perhaps a similar one, but you'll never get the same feelings you did back then (some people will say they do, but they're really getting completely different feelings that evoke the original ones and that substitute is enough for them to make these claims).
Larian did a good job making a great game but in failing to contextualise it in your head, you are basically trying to love the past as if the present didn't exist, which is impossible without some form of amnesia/developmental disorder. Enjoy the game as a modern day game in the style of 15 years ago, but don't foolishly compare it to your childhood and ruin it in your own head.
Oh and don't forget if you loved Baldurs Gate 2 when it was released, chances are you're incredibly old now and not a child anymore. (disclaimer - it's possible you were not a teenager when BG2 was released, in which case you might still be under 25, and thus, still maturing.)
