A realistic observation is that.. Men does love to get sex whereas a women does sex to get love.
How a man excites .. .. bring a nude women in front of him .. but if a nude man is brought in front of a women..its a laughable thing for him and not an excitment thing
what one need to do to excite a women .. talk and talk to her .. take her to shopping .. roam with her .. talk romantic things and so on so forth
So definitely sex is good when both the partners are really excited about it... sex just for having sex might not be good.