I totally agree with you. Sex is the most sacred thing that exists. I believe that when two engage in that activity after the bodies are made one with body soul and spirit and are in the immortal state that sex is what keeps two opposites alives forever. I believe that energy of positive and negatives and the transfer of them keeps two one. I believe in the beginning that the male and female were literally one complete entire complex being consisting of the two halfs like you have a right and left brain. Do you have any references to this in your Indian studies? I know that Shakiti and Shiva are an example of this.
Shiva and Shakti represent what is called Prakriti and Purusha in Hinduism.
Prakriti is the creative aspect, represented by the feminine Shakti.
Purusha is the primordial aspect, represented by the masculine Shiva.
Their union is the point, and this is represented by their marriage, or through the statues that include both as one figure. Further, in their union, something more than both is created, this is the child. The energy of life itself is love, life is created through love, we live as long as the energy of love permits.
We see this many times in Hindu myth - for instance, Shiva and Shakti's child is Ganesha (although here the feminine is called Pavarti just to be confusing). This is something beautiful, despite being decapitated, the love of his father - Shiva - has enabled Ganesha to live on, albeit with an elephants head now. It is essentially saying that through love, all is possible.
Similar to this, we have Brahman and Atman, God and Jesus, it is the whole point of religion.
I call Prakriti consciousness, and Purusha awareness, for these are more accurate terms in English. The relative and absolute is another way of saying it, yet they are not two things in reality.
I cannot speak of your obsession with making all of religion about sex - sex is a physical manifestation or representation of this, but it is only a single aspect. It is something utterly beautiful, but to see it in everything is unhealthy, you place too much emphasis on something so pure, thus corrupt it.
Love is the real thing, the merging of opposites IS love, whether we engage in it through the physical form or understand it cosmically, it is all the expression of love.
Do not chase sex, understand love.
Sex is enhanced by love, but is possible without it, you only make yourself susceptible to being used.
The very purpose of religion is to bring us to a higher love.
This love ultimately transcends the physical and spiritual.
It is all.