Much as I don't find opposite sex attractions to be intrinsically sinful either.
Reader,
Let say you are a male.
Well, God has created "EVE" the "womb-man" to be attractive to you.
Why?
"replenish the species"..
So, God created the man to be aggressive and courageous and a leader, and God designed the women's instinct to find all that appealing and desirable.
Whereas, God create the woman, to be "eye candy" to the man. . She has curves. She's soft.. She has all that hair.. She has all that sexuality. She knows how to use her attractiveness to attract you... ...
She should also be gentle and compassionate and "motherly".. as this is needful for the man.
So, God crated Him and Her as ideal supplements for each other... that fit together and compliment, as if they are both a half, looking for the other half to become as ONE.
God knows what He's doing...
However, the fallen nature in us all, the Adamic part, is related to another spiritual father, and he is a pervert, and a murderer, and a psychopath, and a liar..
So, all of that is in the "fall of adam" .. that is the fall of us all..... and you see it play out in the world, every day., as Jesus told us all... "and the lust of YOUR FATHER, you shall do".
See that?
That is the sin nature., that is the "old man of sin 'that is "Crucified with Christ".. if you are born again..... and its the only nature we have until we are born again by a New Spiritual Father and receive the "divine nature".
2 Peter 1:4