Genesis 1:28 And God blessed them, and God said unto them, Be fruitful, and multiply
I address this in the previous post. I don't want to be repetitive (spamming).
A man's heart deviseth his way: but the Lord directeth his steps.
I address free will vs predestination to someone else immediately after your post.
There hath no temptation taken you but such as is common to man: but God is faithful, who will not suffer you to be tempted above that ye are able; but will with the temptation also make a way to escape, that ye may be able to bear it.
Followed immediately by the section heading "Idol Feasts and the Lord’s Supper". The emphasis of the chapter is primarily on food. Taken out of context the above verses are so general that you can use it to justify all kinds of false judgments. Here are excerpts from the rest of the chapter:
3 They all ate the same spiritual food 4 and drank the same spiritual drink; for they drank from the spiritual rock that accompanied them...
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7 Do not be idolaters, as some of them were; as it is written: “The people sat down to eat and drink and got up to indulge in revelry.”
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27 If an unbeliever invites you to a meal and you want to go, eat whatever is put before you without raising questions of conscience. 28 But if someone says to you, “This has been offered in sacrifice,” then do not eat it..
Then there is 1 Corinthians 10:21-22 that gets straight to the point on food:
The sacrifices of pagans are offered to demons, not to God, and I do not want you to be participants with demons. 21 You cannot drink the cup of the Lord and the cup of demons too; you cannot have a part in both the Lord’s table and the table of demons.
This was an easy thing for people in those days to get confused about, so the Apostles had to give it a lot of emphases and compare it other nasty things.
Nothing in Corinthians supports your assertion that souls and spirits do not pre-exist. That was not an issue that needed to be hammered in, Jews all believe in the pre-existence of the soul and always have. So there was no need to mention it except in passing.
You are assuming that a microbial worm has a conscious soul attached to it. Souls are always conscious. The idea of an unconscious soul is a self-contradiction. Consciousness ultimately comes from our soul and spirit, the brain is just the last stop. To believe otherwise is materialism, not spiritual.
Revelation 20:12 And I saw the dead, small and great, stand before God; and the books were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their works.
I see "small and great", but a microbial worm is nowhere on the list. The idea that microbial worms go to heaven is, I think, preposterous.