I will start with your last paragraph, which denies the truth of what John wrote in 1 John 4:7-21. You can read the whole section for yourself but this one verse disproves your thesis:
1 John 4:19
19 We love, because He first loved us. NAS
God so loved the world He gave His only begotten (the Greek is mongenes) Son that whosoever believes on Him shall not perish but have everlasting life. John 3:16
"Mongenes" means means "one of a kind" or "unique". Jesus was most definitely a "unique" human being because He did not have a human father, lived a sinless life, and although He was not born a slave humbled Himself to the level of a slave and accepted God's will as His own. Jesus not only could do what He as a human being He did what He did as a human being whose only desire and will was to do the will of God His Father and His God and our Father and our God (John 20:17).
Now as to Revelation 21:6, lets put that one verse in context.
Revelation 21:4-8
5 And He who sits on the throne said, "Behold, I am making all things new." And He said, "Write, for these words are faithful and true." 6 And He said to me, "It is done. I am the Alpha and the Omega, the beginning and the end. I will give to the one who thirsts from the spring of the water of life without cost. 7 "He who overcomes shall inherit these things, and I will be his God and he will be My son. 8 "But for the cowardly and unbelieving and abominable and murderers and immoral persons and sorcerers and idolaters and all liars, their part will be in the lake that burns with fire and brimstone, which is the second death."
NAS
These are the words of the Father who sits on the throne, not the words of the Son who stands at His right-hand. No place in Scripture are we told Jesus is or ever will be our Father. Now before you quote what Jesus said in John 4:14 we must remember that all Jesus said was given to Him by the Father (John 12:50).
The preexistence of Jesus as a divine entity is based totally on the tradition of men.
Numbers 23:19
19 "God is not a man, that He should lie,
Nor a son of man, that He should repent;
Has He said, and will He not do it?
Or has He spoken, and will He not make it good?
NAS
Jesus could do all He did because God the Father made it happen after the Holy Spirit descended and remained on Him after John baptized Him.