I've been a gamer since the 90s and at one point I stopped playing all together because I was just bored of linear, hack-and-slash titles. Then I discovered BioWare games (KOTOR 1&2, Mass Effect, Dragon Age, SWTOR) which got me into gaming again.
I fell in love with their interactive cinematics and choice-driven stories. I am still very picky about non-BioWare games. I actually couldn't get into Skyrim and some other titles. That being said, I actually really enjoyed both D:OS and D:OS2.
These games have a style of their own and really shouldn't be compared to titles that rely heavily on the visual, cinematic element. I feel it's kind of like comparing a painting to a song.
Would it have been nice if there had been some cut-scenes, at least for important events? Sure. But at the same time, I didn't feel that it broke my immersion or that the game was lacking. It was just *different*. The narration did a very good job at setting the scene and my imagination did the rest.
Perhaps it is because I come from a time when games had pixels, and one could get captured by a story even if it contained minimal animation, and that I love to draw, write and do anything that engages my imagination. I think resembling older games is actually something D:OS2 was going for, and a big part of it's charm.
I have to agree with some of the replies here that this just might not be your type of game. It sounds like the problem is that you were expecting something different. I am curious as to why you kept playing for that long, since it's obvious quite early on what kind of game it is and how the interactions are handled?
Either way, I am sorry you feel disappointed. I honestly really enjoyed these games, and if there is a D:OS3, I'll definitely buy it. Just like I'll buy the next BioWare game, despite it being two different worlds.