The quality of music in general has improved over the years but I still usually turn it off and play my own. There are some exceptions but far and few in between. I also don't like when they don't separate the music from SFX.
I think that's the thing. Usually they are rushed and there's just something about drawn or generated images that are specifically for the game and most importantly that the author/designer took time with.
Decent game ruined by horrible graphics. Also I hate when forced to slow read text. I read fast and I don't like being forced to read along at the speed of a child learning how to read.