Yeah well thats probably because you have replayed those games to many times. When you do that, the magic is gone (just like listening a song to many times).
Remember when you played those games for the first time?
Every new encounter was scary, every new dungeon was terrifying, every new enemy was dangerous.
There was a very creepy horror feeling going around in unmarked territory.
Of course if you have played those games 20+ times then that first scary feeling goes away. Its a shame you feel like that. Hope you enjoy your brand new all happy and shiny BG3.
No, I don't remember all of it being scary, terrifying and dangerous. Not because I replayed them many times, but because they were not all that. Parts of them yes, but very far from all of them.
And if you havn't replayed them at all, maybe it is your memory that give an untrue perception of what the games actually was?