I enjoy sex just like I enjoy good movie. What is wrong about it? Until and unless I become enlightened I will be driven by my needs. At times I am aware and these urges do not overpower me but not always. What is wrong here according to Buddhism? Enjoyment? If yes that is the case then with all people who are enjoying writing in this forum. Desire to help others masquerades as compassion. I find desires as the central point of origin of actions. I have my doubts whether compassion is the real force. I think compassion is mixed with desire in all our actions till we are liberated. Please enlighten me. 
For the sake of clarity I am just a regular Joe not a monk.
Sex(1) is unwholesome(2) according to the Buddha's teaching. 

If one is on this forum just to enjoy oneself then that is probably unwholesome. If the real intention to be on this forum is to learn and/or help people then that is most likely a wholesome intention and is good kamma.

Wanting to be compassionate is a wholesome intention. Not everything we want is unwholesome.

(2) Unwholesome actions lead to suffering. Unwholesome actions are usually entangled with a wrong view of self, nonacceptance of reality and/or not letting go of reality.

(3) Wholesome actions are usually in harmony with acceptance of reality, letting go of reactions to reality  and/or the correct view of self

(1) Why is sex between consenting adult laypeople unwholesome? I don't know precisely but I do have faith in the Buddha's teaching. Even just wanting to exist is also unwholesome, so I wouldn't get my feathers ruffled over it.