For me personally it's important cause I like being able to bring her to orgasm...to know that it was my touch or my movements or whatever combination of things that brought her to orgasm. For my ex, orgasm was the whole point of it. Sure, sometimes she would tell me me she didnt think she would have one and did, and other times she wouldn't have one at all but was very happy that she was able to satisfy me.
I suppose it really depends on the woman.
But the last thing I would ever want is a dead lay. I thrived on the noises and the movements and the talk....love a woman who tells me what she wants!