Because women have been groomed to surpress all interest in the hopes of remaining socially acceptable whereas men have been encouraged to believe that the satiation of their interests is of great importance. 

I don't doubt that women could be just as interested in men and vice versa. Of course, to say that all men are interested in women(/female presenting persons) ignores the existence of those that aren't attracted to different genders but, still. Women are taught suppression is key whereas men are taught that aggression &/or dominance is. (It all comes down to an existence of a patriarchy & traditional gender roles but that's a topic for another day).

 Some of my female friends say that their partners are interested more in sofa and television than in them :(

Well, I must admit, The women are a beautiful thing in life but also women are into men with the same degree ;) but they won't admit it. They want from men to take the first step and honestly, I don't mind to take the frist step :)

Doris Day Δωρίς: Male animals o_O!!!!! SMH

Maybe , men are more active at their nature.

Maybe , men need conquests.

But, I disagree with the quote because in reality women have the same interest though they don't demonstrate it.

It is like to compare minus charge and plus charge, who of them is more wondering in another, reply is both:-)))

Women are exactly so interested in men like men in women. But women nature doesn't allow to reveal their interest and to act directly, like men do :) So it seems like only men need women, it's very comfortable and good strategic position for women. They are much smarter than us in relations (inter-personal) fields :(

Of course women look at other women, but IMHO only for comparison and competition :) I hope so.