Its not an invalid understanding of Lev18 just becuase you say so.
Just so, the comparison is not admissable just because you say so, largely because you havent established that it has a scriptural basis, largely becuase you keep ignoring my understainding of Lev18 - its there for a reason, and that reason is to bar temple prostitution, and for us, its to remind us that in hoping for good things, we need to do things God's way and rely on Him, not do things in an Earthly, human way - that He has a better plan for us. (The instruction was meant originally so the Isrealites wouldnt use pagan rituals to pray for fertility, but to use the way God laid out - and for us, in this modern age when animal sacrifices arent done, we still hold to this by looking to God for hope of fullness in our lives.)