I like *some* landscapes, but not others. It's difficult to say specifically what attracts me to some but not others, but I have no *general* preference for either color or black and white. For me, color, or the lack thereof, all depends on the feeling that is imparted by the photo and if the color adds or detracts from that feeling. Sometimes color does the best job, but other times the abstracted feel of black and white does it, but it always seem to be tied to the overall feeling.
A couple of the main problems I have with some color landscapes are over-saturated colors, and the looming foreground object, usually a rock. These once were attractive to some extent, but they have become so common that they now prevent me from being able to enjoy an otherwise aesthetically pleasing image. Color can be very powerful when used by someone who understands how to use it, but there are times when black and white drives the photo and color would just be a distraction. Other times the lack of skill results in a misuse of color, which is like any other misjudgment can be annoying.
To put things in context, I used to shoot a lot of landscapes but in recent years have not shot many at all. Most of my landscapes were in color, and my goal was to use the color for emphasis, but as films became more and more saturated, I found that I preferred using black and white. Now I will use either depending on the specific setting, but I still lean toward more black and white landscapes than color, when I shoot them.